Since I have had some issues with other clerics in the grouping healing very poorly but insisting that they use 'Heal, Mass':
Please please dear fellow clerics, don't use 'Mass Heal' it really is inferior to maximized cure light and cure moderate mass - given that you have a good potency item of course. Using these two spells - maybe a cure serious mass here and there - means that you will heal much more steadily and not only every few seconds for not much more than you get with maximized cures.
Healing in the shroud part 4 and 5 with mass heals = too strong hitpoint fluctuations resulting in ding ding ding.