I run XP as a virtual machine within Win7, and use them about 50-50.
There are times when the efficiency and ease of use of Office 2003 on XP makes it the tool of choice, and times when I need all the memory available so Office 2010 is used on Win7.
I would love to see the XP UI overlaid on the Win8 code base. Of course, it ain't gonna happen, but it would make me a happy camper.
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