I've been using the Windows 8 Release Candidate fairly regularly for a couple months now, and I just installed the Windows 8 RTM bits. The Win 8 user experience took a little getting used to, but overall I like it. I do find myself spending most of my time running legacy applications (Office, Visual Studio, Evernote, etc.) in the desktop view, but I think as more useful and fully baked apps become available in RT, I'll spend more and more time there. The key will be getting the tools I use regularly "metro-ized" (or whatever Microsoft is going to call it now that "metro" is a no-no). Some of the biggest Win 8 positives: speed to boot (blazing fast), cloud-service integration, and stability. Also, I'd sure like to get my hands on a Surface tablet when they come out--I think it will be a joy to use.