I think I will still keep in dual boot with Windows 7 as I do now, There is nothing wrong with Vista IMO.

Toss the discs, use the cool plastic cases for important stuff. I have Vista RC1, RC2, and Ultimate. The curved plastic cases stand out and are great for putting all of your important documents... make other copies and give them to family members in other houses to protect data fully.
I burned Vista already about 2 years ago after 2 weeks of using it and I went back to XP.