I have a level 39 Merc Healer and I love it. It is a challenge but i was able to solo heal world boss Snowblind. It was rough but it was fun and I really enjoyed it. I do notice that my heals are not as big as the Sorc's and Op healers but I do not think they are better. I am glad people posted about Merc's, so I could see what the fuss was about.