If you're like most Web designers, you have several computers. But there is probably one that you prefer over all the rest. What operating system does that machine use? Personally, I have a Windows XP machine, access to Windows Vista and Windows 7, Mac 10.4 and 10.6. But my preferred OS is Snow Leopard - Mac 10.6. It took me a while to get it installed (Apple had to send me a replacment disc), but now that it's up and running I just love it. What's your favorite OS?