I love Windows 7. The biggest stink about Vista was really compatibility issues, which they fixes in their service pack before I got it, so I loved Vista too.
It's still Windows, and a couple things are different, but I found that a couple weeks in I felt that the organization made a lot more sense than it did in XP and previous versions. And if you have trouble finding something, there's a search right on your start menu that I use ALL the time. It's like google for your computer!
