My favorite CLeric is my Necro Cleric. I don't use the inflict lines though, I just stick with zapping, cursing and Harm ( usually 400 - 800 pts of Damage on Harry). I don't carry Maximize on this cleric, but do carry Empower Healing so that when I fight Sorjek/Sub Skelly/ GOP boss I get 400- 1100 pts of damage from Heal spell.
The cool thing about being necro is that everything you do pump your necro crits, also pumps your healing
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So when I quest I have alot of fun zapping, but I am still set up great to heal in raids. My heals crit alot, its not something that I count on, but its nice.