Gone through the hassle to Install Windows 7 from beta release to RC Build 7100. All the builds were getting better then the previous release and Build 7100 is by far the best and stable.
I think my Windows XP in Parallels now had the good Windows 7 as the contender to be replaced. I was very disappointed with Windows Vista when installed in Parallels. Vista was such a bloated OS that I spent most of the time waiting to click the next task.
Windows 7 when you switched to classic mode interface, the OS operated faster than XP. I could feel Windows 7 is much sleeker and neater than XP and Vista when you executed a task. Windows 7 integration with Parallels 4 had more bells and whistles than running with XP. I was not sure with Vista because I gave up on it.
Windows 7 had an old compatibility mode feature that let you run older software and drivers, and this feature worked so well that I had no problem running older application and support for older hardware.
So far so good, Windows 7, I had no complain. I am looking forward for the release.