I have all versions of windows and after installing the 8 preview I threw them all out including 7 and since then stuck with 8 and loved it and my four start menus I have for it but I can't stop thinking about 10 I hope next month's build gets rid of the fatal errors and I can switch to it permanently but I fucking LOVE 8 for its speed and how great it works but windows 10 has that and so much more omg