The topic maybe misleading because I don't know if it's bad experiences or if I don't get how priests heal.
I recently run into some priests that in my opinion just healed bad (random heroics) - but I wan't to know if it is common for priets to heal this way. My problem is that these priests didn't top people, which I think is a most normal thing to do after a pull. At least the tank. They seem to forget about dps. I got hit by the WW of the warrior champ in ToC, so I backed off and had to watch how I slowly died (at ~25% health) by some dot I couldn't get rid off. This are just some examples. I don't think only priests are bad healers but it almost seems like a trend to me.
By my observations those were mostly but not only disc priests (judging by visuals of this spell: http://www.wowhead.com/?spell=47515 which is disc only, isn't it?)
I currently level my own priest (still low, 26) and would like to know if it's just hard to top off the whole group in heroics.. or if I just had bad luck with my healing priests.