Loken
Auto-translated
I love demons in all the Heroes games. And especially in the fifth one – the gates are awesome, the models are great, and the hero model is just super, along with his animation. I don't like Necropolis, probably because I've played with them too much in the past, and they've become incredibly boring.
As for the others, they're just okay. I don't really like Haven. But I do love Academy, just like I love Inferno. But they are really expensive.
And my absolute favorite is Dungeon.