Least favourite is absolutely the Beastmen. I do not like them in campaign if I am versing them, they're a nuisance but not a threat and they spread corruption everywhere which drives me insane; they also hide a lot. When I am playing them I get annoyed at how limiting the horde feature is and the lack of stability that comes with.

In quick battle their rubbish archers really annoy me, I enjoy seeing the minotaur and gorebull do their grim business but the rest just don't do anything for me. All in all I wouldn't care if the Beastmen just went in a hole and stayed there.

Favourite is the Wood Elves, most of all I love the variety of units they have and how handsome they all are. In campaign I like how centralised yet spread out they can be, I also like how capturing certain capitals gives me a lot of extra benefits.

In quick battle I appreciate how cost effective Eternal Guards with shields are how the Glade Lord on her dragon is so excellent. I also am really glad that they have Wild Riders and Hawk Riders which both add exceptional mobility and power to my army, I always use em. Mostly though I like how fast and range orientated they can be, both of those are very important to me.