The good: Strong design and Microsoft don't always go together, but they do in Windows 7. Users might take a while to get used to the new taskbar and Aero Peek, but they're a pleasure to use.
The bad: Performance is still hit-or-miss in Windows 7. At the ripe age of seven, Windows XP still performs better in some categories.
The bottom line: Windows 7 is more than what Vista should have been, it's where Microsoft needs to go and they went there. How much damage did Vista do and is Windows 7 enough for people to finally abandon Windows XP are questions that nobody has the answers to right now.