I can't comment on the ATI cards, but as you said, its the right brand name. The only advice I can give you is stay right away from Lifeview cards and FlyVideo stuff. Absolute crap. I made the mistake of getting one about a year ago and it only annoys me more than anything. Driver problems, tuning problems, you name it! And do you think that lifeview would reply to my emails?? of course not. I think its time I sent them some slightly more abusive ones.
Hope this helps 🙂