I managed to install OSX in VirtualBox today so I could test some website functions in Safari. I have not played around with OSX much, and I was not very impressed. Maybe I am just familiar with Linux now, or maybe OSX was running a tad slow because it is in a VM. Whatever the case, I think I like Ubuntu better.
It used to be a goal of mine to one day upgrade to a Mac, but I think I am happy sticking with Linux, and running OSX and Windows in VirtualBox for the random times i need to test things.