I had pre-ordered 2 copies of WINDOWS 7 HOME PREMIUM from the MICROSOFT Store back in July. They had a special $49.95 price, for a short period of time. How could anyone pass that one up?
As soon as I received the disks in October, I upgraded 2 of my computers from VISTA HOME PREMIUM.
The first upgrade was done to an Alienware Area-51 m9750 machine.
The second was done to my DELL XPS-410 Desktop. I had no glitches during the upgrade. MEDIA CENTER, and my MEDIA CENTER extender, worked right off the bat.
My only disappointment was the lack of Bluetooth support. It did take me a couple of days to get that back. I wound up installing Toshiba drivers which did the trick.
I am quite happy with WIN 7.