to start off with.. most 33" wont fit in a cabinet. So before you buy, measure.
Next.
ATI's you can't go wrong (but the XPert) great quality. The vid in/out on the radions will give you TiVo support if you want to watch TV on it which is kinda nice.
Gefoces you have to watch out for. There are a bunch of different chips and some are great and some are crap. The TV in/out versions are all good I think. Some love their end results, some hate it.... but thats probably chip dependent. So make sure there is a good return policy from where you get it.
btw, I think a high end geforce might be better if you ever play 3d games. The FSAA is GREAT on monitors that can't handle high res!