Most people here would probably advise you to get a Radeon 9700 non-pro.
This works well as long as you don't run into any compatability problems, as happens with some setups. This board and many others contain evidence of this happening and no matter how much trouble shooting these people do, there is no working around the problem. I was one of these people, who tried to switch to a 9700 Pro last December and I could NOT make it work.
On the flip side, some other people have no trouble whatsoever (I would guess peeps who have Intel setups as opposed to VIA/nVidia) so what does this mean to you? Shop at a place that has a GOOD (for you) return policy if you can't make it work and try the 9700 np first.