Everyone: Thanks for the input so far. For the record, it's a GeForce 3 Ti200 that I'm looking at replacing.
Now that I've done some research, it looks to me like a 9500 pro is a better choice than the 9600 pro, due tothe increased number of rendering pipelines, and (it would seem to me) a higher possibility of a performance gain thru overclocking. Agree? Disagree?
I'm not too concerned with a reinstall, I do it on a fairly regualr basis anyway.
Oh, and as for availability, I have a couple sources for a 9500 Pro, should I decide on that, so that's not a concern.