I've got two workstations plus a laptop running XP Pro, plus one shop-built WIN7. (Three more XP workstations in a closet if needed. My brother stocked me up. LOL)
I've really, really liked XP over the years, but I have to admit WIN7 is growing on me. I have this love/hate relationship with IE. I like IE, but it aint worth having on the XP boxes. IE does run pretty good on the WIN7.