(and were generally pretty useless)
I find Flying units to be pretty good, esp for getting a quick strike on some maps.
It's alright, I find the campaign to be a hellhole at times (I.Hate.Necrons) but I find the Sisters of Battle fairly... weak at times. Granted it may just be my skill, the bugfix mod, or a combo of both, but when I go for ANY sort of defense strategy in a game, I get mushed!
Why does offense have to be the best defence =[