I would buy the 5700
Not because its a faster card... or its got more pixel pipelines
but because you just cant beat nVidia's driver support and card stability.
I owned nVidia cards ever since i had my first geforce (geforce 1 16mb)
and have owned them ever since... until i bought my 9500 last year
ever since then I have had a number of incapatability problems with games. a hundred system crashes(maybe more), all the drivers just suck nuts. they sometimes dont even fix what they claim. and they take too long to get them out
High performance card but I am disatisfyed with my Radeon
GET THE 5700 DUDE or better yet get a 5900 XT for about 200 bucks. worth the money and still fast enough to run any game out right now.
I could be wrong though 9800 pro could be a stable card... but
i have heard differently with many many many disgruntled ATI customers. (several being my many brothers that own the cards)
I myself am ordering a 5900 XT 128mb next week because the benchmarks blow the 9500 i bought out of the water. plus its the same price that my card is
kinda weird.