I recently installed ubuntu 9.04 in my laptop. Others say that I will have a hard time installing the wifi adapater in linux (broadcom). I just surfed the net on how to install it and there it is, working like on windows xp.
In my opinion, i say ubuntu is the best. It's a complete package with firefox, open-office, gimp and mind games.
Currently, i am working on how to install my HP 4280 all-in-one printer to it.
-update: Printer is already installed with the OS. :)
ubuntu ROCKS!