or does it just depend on what tree you follow?

From a healing perspective, miracle set sounds amazing

looks good
but some people told me to use 2 miracle 2 sacred for recovery power 2p bonus

Hmm, the four set though might be worth a look. I'm sure some of the top players have done tests but the proc sounds really good if it actually works.

Grand Templar

whatever has the most recovery i guess

The miracle healer set proc does work, but there is a hidden cooldown. I'll need to do more testing to check how long it is.

You don't need more than ~3100 recovery to get 100% uptime on astral shield, so stacking more than that provides diminishing returns.

i run pure crit, 38% crit alone, and power/recovery at 2nd stat priorities, recovery useless. who cares when your shield has a 1s cooldown after it fades, my healing is on par with any t2 miracle healer cleric, while my dps in AT LEAST 2-3x higher at the end of any dungeon, which is a lot considering the other cleric last night ended with 4m dmg, and i had 12.9m dmg and tied for healing.

miracle set only procs on 1 person which is almost always u regardless of nearby allies hp. I wanted to go 4/4 miracle but its not that amazing so 2/2 sets is probably the best choice.