I have to say:
I will never go back to Vista.
Windows 7, I have been using since two weeks before this topic started... I think I've done all the testing I can, and theres only one major bug I have encountered, when I plug in a second monitor, my computer crashes....
Also, the Sims 2 wont run, but, I researched this, and I seem to be the only one having this issue, it probably just requires a reinstall.