BFG10K is right on on his hardware facts. Benchmarks fully support his post. However, benchmarks can be misleading, especially when dealing with anisotropic filtering and FSAA performance. I have both a Radeon 32MB DDR and a Geforce Pro 450 running on a couple of machines. Niether card does real well at 1280 x 1024 and above, so I use 1024 x 768 and FSAA. With FSAA anisotropic filtering keeps things really clear. The Geforce takes a pretty big performance hit, the Radeon much less. Using the catalyst 9050 (much faster than any other ATI driver) HSR is fully supported, while Nvidia doesn't allow this feature on a Geforce2 chipset. In my real world gaming tests, the performance is very close, often the Geforce Pro spikes with much higher framerates, but without HSR, complex graphics often slow it down below the Radeon 32MB DDR performance. So it is a toss up in my humble opinion, but strictly looking at benchmark data the Geforce Pro appears to be way ahead. In favor of the Radeon 32MB DDR is the low price of $38 vs. $59 for the Geforce2 Ti on pricewatch.
For $9 more you can get a Radeon 9000, so a Geforce2 doesn't make much sense anymore.