Hi!
I tend to favor more rejuv due to the near-ubiquity of buff pots. I started a cleric spec document a while ago and never completed it. Here is a little bit of it.
Cleric Specifications Explained
There are many specs that a cleric can take to viability. Here are a couple of them.
+-------------------+------------+--------------------------------+----------------------+
| sc: str/con | bo: body | mj: major heal | da: damage add |
| dq: dex/qui | en: energy | gr: greater heal | mz: pbaoe mesmerize |
| ac: acuity | sp: spirit | gp: group spec heal | dd: smite dd |
| hr: health-regen | | si: single-target instaheal % | pb: pbaoe smite |
| af: armor factor | | gi: group instaheal % | ao: aoe smite |
| md: melee damage | | rz: resurrection | |
| hp: heal-proc | | ns: nearsight heal (1/2) | |
| | | sh: spread heal | |
+-------------------+------------+--------------------------------+----------------------+
* Generalists
+----------------------------------+
| Crusader: 40e 36r 4s |
+----------------------------------+--------------+------------------------------------------+------------------------+
| Buffs | Resists | Heals | Smites |
| sc | dq | ac | hr | af | md | hp | bo | en | sp | mj | gr | gp | si | gi | rz | ns | sh | da | mz | dd | pb | ao |
| yw | yw | yw | yw | yw | yw | yw | yw | yw | yw | yw | bl | yw | 80 | 50 | 50 | 1 | bl | 1 | 9s | - | - | - |
+----+----+----+----+----+----+----+----+----+----+----+----+----+-----+-----+-----+----+----+----+----+----+----+----+
| The Crusader is a good spec for a cleric that is going to be a primary buffer in a group. With full yellow buffs, |
| you will be expected to provide buffs to tanks and casters alike. Your heals are very good as well, and you can |
| provide constant healing output for all but the most concentrated of attacks on your tanks. |
+---------------------------------------------------------------------------------------------------------------------+
+----------------------------------+
| Templar: 40r 36e 4s |
+----------------------------------+--------------+------------------------------------------+------------------------+
| Buffs | Resists | Heals | Smites |
| sc | dq | ac | hr | af | md | hp | bo | en | sp | mj | gr | gp | si | gi | rz | ns | sh | da | mz | dd | pb | ao |
| yw | bl | ye | ye | ye | ye | yw | yw | bl | yw | yw | bl | yw | 80 | 50 | 100 | 2 | yw | 1 | 9s | - | - | - |
+----+----+----+----+----+----+----+----+----+----+----+----+----+-----+-----+-----+----+----+----+----+----+----+----+
| The Templar is a standard build that trades the yellow dex/qui buff and yellow energy resist buff of the Crusader |
| for a larger spreadheal, a larger rez, and fast nearsight cure. You still have the blue dex/qui buff for dex-based |
| characters. |
+---------------------------------------------------------------------------------------------------------------------+
* Healers
+----------------------------------+
| Apothecary: 42r 33e 7s |
+----------------------------------+--------------+------------------------------------------+------------------------+
| Buffs | Resists | Heals | Smites |
| sc | dq | ac | hr | af | md | hp | bo | en | sp | mj | gr | gp | si | gi | rz | ns | sh | da | mz | dd | pb | ao |
| bl | bl | yw | yw | bl | yw | bl | yw | bl | bl | yw | bl | yw | 100 | 50 | 100 | 2 | yw | 1 | 9s | - | - | - |
+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+-----+------+----+----+----+----+----+----+
| The Apothecary is a dedicated healer. The 100% ST insta heal will ensure that you can bring one groupmate back from |
| the brink. You also have a powerful greater heal for concentrated heals on one character. The downside to this spec |
| is the weak buffs: mostly blues. This shouldn't be a problem in groups where there is a buffer present and you are |
| simply buffing bases. |
+---------------------------------------------------------------------------------------------------------------------+
+----------------------------------+
| Hospitaler: 43r 32e 6s |
+----------------------------------+--------------+------------------------------------------+------------------------+
| Buffs | Resists | Heals | Smites |
| sc | dq | ac | hr | af | md | hp | bo | en | sp | mj | gr | gp | si | gi | rz | ns | sh | da | mz | dd | pb | ao |
| bl | bl | yw | yw | bl | yw | bl | bl | bl | bl | rd | bl | yw | 100 | 50 | 100 | 2 | yw | 1 | 9s | - | - | - |
+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+-----+------+----+----+----+----+----+----+
| The Hospitaler is a slight variation on the Apothecary that downgrades the yellow body resist to blue, but |
| increases the major heal to red. A powerful spec for a primary healer in a 2-cleric group. Expect this spec to |
| struggle in groups where there is not a buffing cleric available to provide stronger resists and yellow or higher |
| buffs, though the healing capabilities of the spec can make it possible to heal-through the buff short-comings. |
+---------------------------------------------------------------------------------------------------------------------+
+----------------------------------+
| Lifegiver: 50r 20e 4s |
+----------------------------------+--------------+------------------------------------------+------------------------+
| Buffs | Resists | Heals | Smites |
| sc | dq | ac | hr | af | md | hp | bo | en | sp | mj | gr | gp | si | gi | rz | ns | sh | da | mz | dd | pb | ao |
| gr | gr | gr | gr | gr | bl | bl | - | - | - | rd | rd | rd | 100 | 100 | 100 | 2 | rd | 1 | 9s | - | - | - |
+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+-----+------+----+----+----+----+----+----+
| The Lifegiver is not a common spec because it sacrifices all practical buffing in favor of extreme healing |
| capacity. The red major heal is good enough to bring a near-death tank to full health with a single cast, though |
| without a strong composite rejuv score you will have some variance to deal with. Red spreadheal and 100% group |
| instas give the healer a lot of insta-heal power as well. Not a spec to try without a 2nd enhance cleric in group. |
+---------------------------------------------------------------------------------------------------------------------+
+----------------------------------+
| Medic: 50r 20s 4e |
+----------------------------------+--------------+------------------------------------------+------------------------+
| Buffs | Resists | Heals | Smites |
| sc | dq | ac | hr | af | md | hp | bo | en | sp | mj | gr | gp | si | gi | rz | ns | sh | da | mz | dd | pb | ao |
| - | - | - | - | - | - | - | - | - | - | rd | rd | rd | 100 | 100 | 100 | 2 | rd | 1 | 9s | - | - | - |
+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+-----+------+----+----+----+----+----+----+
| The medic is a variation of the Lifegiver that trades all spec enhance for increased survivability in smite. AOE |
| smites and casted smites allow for weak damage, and allow the cleric to tag enemies for higher gains on raids and |
| in RvR, though care must be taken to avoid breaking mezzes. PBAoE mezz gets a little less resistability and sticks |
| for 15s, which allows a better chance to escape a single bad situation. You can still give good base buffs, but the |
| temptation to smite instead of heal must be resisted. |
+---------------------------------------------------------------------------------------------------------------------+
+----------------------------------+
| Combat Medic: 48r 24s 6e |
+----------------------------------+--------------+------------------------------------------+------------------------+
| Buffs | Resists | Heals | Smites |
| sc | dq | ac | hr | af | md | hp | bo | en | sp | mj | gr | gp | si | gi | rz | ns | sh | da | mz | dd | pb | ao |
| - | - | - | - | - | - | - | - | - | - | rd | yw | rd | 100 | 100 | 100 | 2 | rd | 1 | 9s | - | - | - |
+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+-----+------+----+----+----+----+----+----+
| The Combat Medic is mostly the same as the medic with a downgrade of the red greater heal to yellow, but addition |
| of some additional smite power, and higher damage add. Healing variance on the greater heal should be lower |
| allowing for consistent high-power healing. |
+---------------------------------------------------------------------------------------------------------------------+
* Smiters
[todo]
* Buffers
+----------------------------------+
| Zealot: 50e 20r 6s |
+----------------------------------+--------------+------------------------------------------+------------------------+
| Buffs | Resists | Heals | Smites |
| sc | dq | ac | hr | af | md | hp | bo | en | sp | mj | gr | gp | si | gi | rz | ns | sh | da | mz | dd | pb | ao |
| rd | rd | rd | rd | rd | yw | rd | rd | rd | rd | bl | bl | bl | 40 | - | 25 | 1 | - | 1 | 9s | - | - | - |
+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+-----+------+----+----+----+----+----+----+
| The Zealot is a typical spec for buff bots and farming characters. Heals are generally weak, though sufficient for |
| supporting a farming toon (like a cabalist or necro). Variance on the baseline heals is high, however, which limits |
| the effectiveness as a healer until higher RR is achieved. |
+---------------------------------------------------------------------------------------------------------------------+
[todo]