RE: ubuntu vs window
just MY observations, i used Unbuntu and Mint for a while, i felt them far more stable and light than any Windows i tried, no freezes, crashes, BSODs, or hundreds of patches, etc...
i know that each have pros and cons, but an OS that is more stable and light than another, is "better" for me, in my opinion. I don't mention about user-friendliness because it varies from users to users.
I don't switch to Linux since i need many Windows softs, need to stay on windows and be in touch with it for my work, etc...