Graphics card

I am a semi-professional in terms of Audi Video compilation recording, capturing, dvd, tv, vhs, using fire wire, s-video, composite etc. Since I am in the market for a new PC I want to get the best possible Graphic Card, but with the ATI all-in-wonder disappearing from the market I am looking what can I find either in an all-in-one type or in two card configuration that has same capabilities of the ATI All-in-wonder or more.

I think I am exhausted myself looking reading and asking.