Thanks for all the replies guys. I would stay with 2K/XP except that I plan on running 12GB RAM and want to use an i7, and from what I understand, the newer OS's are better at handling the multiple cores and additional memory (certainly the 32-bit limit -- if 64-bit XP didn't get such poor reviews, I'd be considering it over everything else).
Certainly I'm not shunning progress, nor do I churn butter on the weekends in an electricity-deprived village in the woods. I've just become continually frustrated with interfaces that fundamentally change the way I interact with the computer, that's all. I shouldn't have to learn a new GUI every XX number of years. You call it progress, fine. If you've happy with the new gee/whiz/flash/bang aspects of Win7, more power to you.
I may be old fashioned (hell, I don't even have LED fans in my case or a touch screen on my cell phone, oh the calamity) but I don't look forward to changing the way I interface with my PC just because I want to upgrade to software that lets me use the latest hardware.
And I guarantee you I'm not alone in my opinion