Vista post SP1 was pretty much fine and much like win 7. The only reason 7 was released was to combat the tarnished name of vista.
I actually bought vista. Why? Because XP 64 bit was abandoned, and 64 bit os was needed because 4gb (often 2.5gb or even less) was not enough.
The scary thing it that there was a win 7 32 bit and beyond! People are idiots stop giving them a choice!