Any of the newer AGP cards. What's your budget?
Take a look at 6600GT models, they seem to deliver a lot of bang for the buck. I'm looking at an MSI 6600GT <A HREF="http://www.newegg.com/app/ViewProductDesc.asp?description=14-127-150&depa=1 " target="_new">http://www.newegg.com/app/ViewProductDesc.asp?description=14-127-150&depa=1 </A>
with VIVO but there are others that may be better if you don't need or care about VIVO.
Depends on what you want to spend. Also depends on whether you are considering a future upgrade to SLI, in which case you'd want to buy a top card now, and then buy a second exact card down the road.
Check out THG review of mid-range cards here: <A HREF="http://graphics.tomshardware.com/graphic/20050404/index.html" target="_new">http://graphics.tomshardware.com/graphic/20050404/index.html</A>