Vista works fine on my home machine. I can't say that it's better than XP - it just operates differently. I'm not resistant to change when it's good (I used DOS from 1.0 to 6.22 and Windows since 3.0 (dabbled with 2.0)) - I'm quite happy with the ribbon model of Office 2007 (though I wish you could customize them), but nothing in Vista stands out as "different but much better", just "different".

My work machine, running Vista Enterprise, is a different story. It's a pig compared to my old machine, which was 2 years behind in hardware. Slow to boot, slow to respond, lots of "hold on 10 seconds while I just sit here and do nothing". We've rolled it out to tens of thousands of users. Our CIO actually published an article on his blog titled "Vista, it's not that bad". I can't say for sure whether it's Vista enterprise itself or our implementation of it.