On Vista, you're likely to get a range of opinions. I don't mind it. I run it on both my work and home laptops and other than the User Account Control thing being annoyingly reminiscent of why I don't like Macs, I've not had any issues. I've run 32-bit Vista on my work laptop for the last year or so and 64-bit on my home laptop for that and some change and have had absolutely no performance issues on either. I tend to use the Office suite and Firefox, in addition to some SQL developer tools and a couple statistical analysis packages at work. I run Warcraft on my home laptop without a hiccup and frequently use it to watch movies. *shrug*