I used Vista Beta2 and RC1. I haven't purchased Vista yet, as I'm waiting to see what Fiji can bring in terms of Media Center.
My complaint with Vista was it's memory usage, which was like 600MB/800MB. I do have 2GB of RAM, plenty to handle it, but I prefer to have free space for the applications to work in RAM, rather than Page File.
Once you find your way around the (uneccessary) changes in the navigation, it has very few bugs.(By the way, after some tears on the desks, what XP bugs are you talking about?)
I was a Vista Beta tester, and have been using it as my main OS since RC1. The bottom line is that it is, in only some very small aspects, better than XP. It is a wise decision of the mass company buyers not to expend any money on "upgrading"??)
Microsoft has just recently poisoned their own well water by announcing a possibility of a new OS every two years. What budget cautious company is going to try and keep up with that! Are the software and driver manufacturers going to try and cope?
I myself have a copy of Office 2003 Student and Teacher edition. It seems fast enought for me. Perhaps you should try out Windows Longhorn Reloaded, it's suppost to be much better than Windows Vista, and it uses a differnt core.