Windows: fast, user friendly, expensive, the more you use it the more it will punish you.
MacOS: fancy, user friendly, well... most of the time anyway, expensive, the next release will almost certainly force you by a new mac.
Linux: it can be as rough or fancy as you are, the more you know the more user friendly it becomes, free, it can work with old and new computers.
So basically, RUN... run to Linux!
Specially Ubuntu 10.10 or Mint 10 Julia after all it's free.
ThePrivateGeek
2011