So I've gotten hooked on Total War Rome II; they've done a great job improving Total War. The AI can be a bit stupid still, but all in all they've come a long way.
I do not buy TW games until they have been out over a year and there is a 50%+ steam sale on them. It takes them about that long to work the bugs out of them. TWR2 seems to been worse that most of their releases in this regard.
I haven't run across any bugs in the game, but I got it at Christmas and following install there was like an 8 gig patch.