I have Windows 7, Ubuntu and OS X running on separate machines that I use almost daily. Windows 7 on HP laptop (procured (wink) from my wife) for taking to uni

I have Windows 7, Ubuntu and OS X running on separate machines that I use almost daily. Windows 7 on HP laptop (procured (wink) from my wife) for taking to university. Runs my CFD and CAD software which only run in Windows. OS X on Mac Mini on my desk. Bought for iOS development but getting used less these days as I'm back at uni. Ubuntu on Thinkpad in the bedroom as a media server with Optoma HD600X projector connected. I tried using the Ubuntu Thinkpad as my main machine but I really just get more happiness and satisfaction from Windows.