I am just curious to see which ones give others the most trouble when fighting:
For me it is definitely Undead which give me the most trouble. The school which I hate to fight the most is the Shaman: The debuffs, DoT`s and the healing power of the Shaman means big problems for me and makes for a real exciting fight. They don`t deal a great amount of damage in any single attack but they take forever to kill ifI amvictorious at all!