I don't have one. But my friend does, and he loves it!
I've used a MacBook before and the UI is simple to navigate through once you get used to it, if you coming from a Windows PC.
If you use Linux, Ubuntu, it's not that hard of a transition really. A lot of things that are similar.
My only problem with Mac is that they're way to expensive, so I can't afford one D:.
Good luck in getting a Mac, they are nice computers