If you’re hemming and hawing about whether or not to upgrade to Windows 7 when it is officially released on October 22 then you can hem and haw a little longer while you are checking it out.
According to an article in the Telegraph, Microsoft is going to allow you to essentially reset your 30 day trial a couple of times to allow you to try before you buy for 120 days. That should be more than enough time for anyone to make a decision, and in my opinion, it won’t take that long. I’ve been using Windows 7 in its various Betas and Release Candidates and now the final release and I’ve experienced zero problems, beyond waiting for a hardware manufacturer to release a driver or two. But even then, Vista drivers are doing the trick for me.