Here we are again, a brand new OS from Microsoft. This usually means a plethora of compatibility issues with third party software, among other things such as very exhaustive reviews. I have seen very few reviewers go into such detail about an OS as this guy did. It is a very helpful review that covers Win7 front to back. I've been using Windows 7 and so far i have really enjoyed it, and it has been very stable so far, all the new features that will make the computer experience easier for users. But also will make it easier for administrators that try to install 3rd party apps like Screwdrivers on it, as Screwdrivers and other triCerat products are fully compatible with Win7. But I'll get off my soap box and show you the link. This guy also wrote a very comprehensive review of the new Mac OS Snow Leopard. So if you're deciding between OS's this would be a good couple articles to read. Here is the Windows 7 review.

http://arstechnica.com/microsoft/reviews/2009/10/windows-7-the-review.ars