Be careful about choosing Radeon if you think you might move to Win2k or a dual boot setup.
Their Win2k drivers are still problematic, I believe. Their history of fixing driver problems in the past is pretty bad. So it isn't inevitable that they really will for W2k, which probably doesn't represent a huge portion of their sales.
Personally, I also worry that with the NV20/ X-Box effect, ATI may go the way of 3dfx. They aren't making much money as it is now, I believe.
Geforce2 GTS 32meg DDR cards can now be had for $165-170, if you choose a less name brand. The all perform the same - only things live TV video out, etc differ. eVGA has TV out for $169 on pricewatch.
It's what I'm not planning on getting when I read the DDR vs 133A mobo shootout reviews, on actual production and selling mobos.
Today, anyway. Might change my mind tomorrow