Which monster do you like the most in Heroes 5 (level 4)?

I think that Druids and Vampires are too weak in "Heroes 5".

O.o Druids are weak??? They have Alt-Grade, which gives a spell, and Lightning – that's good for dealing damage... Vampires are weak with their life-draining ability? With Dark Energy, you can gather so many of them by the endgame that it's almost impossible to defeat them (I'm talking about large maps)... Under Lucrezia, it's just insane...