Cnet: "I have had Windows 7 Ultimate RTM (release to manufacturer) for a few days. This is, of course, a legitimate copy, not the leaked copy that you can download from the Internet. That's the good news.
The bad news is I have to test it, which has been lot of work. We tested the new operating system against Windows Vista SP2 and Windows XP SP3. Overall, Windows 7 offers a much more pleasant experience than Windows Vista. Everything works more smoothly. The new OS takes less time to launch applications, and it's nice just to browse around its functions and features--it's also very pretty. However, it is slower than Windows XP, except for the boot and shutdown times, where XP has always been a drag."