Apple is much better when it comes to mobile devices. If they didn't restrict their OS to only their hardware I would try it out on my computers, however I can't so end up just running Ubuntu instead.
Apple's hardware products like iPhone etc are quiet famous, while Microsoft is still dominating the OS market. Both of them are major companies and competiting for top positions.
Apple is very innovative and has a great customer service than Microsoft. But still they are in different market and I believe that they must not be compared though I heard that these two are merging. well, i hope someone can confirm this, just wanna know if its real.
IMO, if you have money to afford a MacBook, get it, but if you are just looking for a cheap personal computer to use, just buy a Windows 7