I follow what the bigger business networks are doing. They held onto win2k as long as they could then went to XP after SP1, prior to that XP was a complete mess. Vista was junk in the business world even after the 1st SP. My current office did not start moving to Win7 until after SP1 for that, and they have been testing W8 and W8.1 with near Vista levels of junk, not to mention a tablet based touch OS on a multi headed (monitor)non-touch machine is just annoying to use. I was happy when the 1 week test on a desktop for my team was done and I could go back to my nice stable and usable W7 machine.
