Personally for an 80 Engineer i find prayer to be better unless your elixer spec, sure it has a longer cool down but Prayer to dwayna heals 6,50 on a 5 second longer cool down, and the tool belt ability heals 995 with a 100% chance for regen and is on a seperate Cool down of 40 seconds, were the elixer H heals for 5,560 and the tool belt for elixer H doesn’t heal and has a random chance for one of 3 buffs so for non elixer spec i prefer prayer, ive never really tried heal turret much so i cant really compare