I can already tell you didnt actually look over all 50.
Windows 8 is soooo good I did not have to : )
btw I tried it and also upgraded to 8.1 (3.6gb download that you could not save) and learned to despise it. Lasted about 1 month before going back Windows 7.
Linux Mint is the one if I were to choose as I have used it. It is laid out well. You have to wonder what was in the coffee in Redmond for them to even consider Windows 8.