I was one of the early adopters of Windows Vista. My mistake was to choose a newly designed OS from the ground up and then choose it in a 64-bit architecture. There were two main reasons why my Vista love was short-lived. Lack of drivers and too many annoying security questions. I lived with XP ever since.
Windows 7 finally made it to my laptop about a month back. I’m very impressed. Drivers so far have been no problem but for some I did have to dig a little deeper. Jump lists, Aero peek etc are all new and exciting features all built in making the need for 3rd party software redundant. The UI is clean and stylish making it at par with Apple’s OS if not marginally better. Boot times are quick (though not scientific, I feel it is significantly faster than XP on the same laptop with the same configuration). While the default security options are quite obstructive and chatty, it was easy to disable (unlike Vista).
Other than the obvious features, there are some minor ones I really love. Since I didn’t stick with Vista long enough, its hard to say if they were introduced in Vista and I just happened to find in 7. For example, I love the fact when I can vertically maximize windows by pulling one edge to the end of the screen. Hovering over taskbar items shows a little preview of all open windows for that app and keeping your mouse over it for a while makes all other windows except that one disappear. You also see similar effects with Alt+Tab. Process handling is by far the best thing about it. If an application hangs, 7 will grey out the app making it clear to the user that it isn’t responding. Also if you try continue to use (maximize, close etc) an app that isn’t responding, 7 will prompt with a dialog asking if the app should be terminated or diagnosed for problems. This is much more convenient than having to bring up task manager and find and kill the app.
Overall, I’m very pleased with 7. I highly recommend giving it a spin.