Apples run much more smoothly in my experience. I got my macbook pro when I went to college three years ago and it's basically my lifeblood haha. I'd never go back to PC but that's just my personal opinion.
I'm running Macs across the board because they are seamless and easy to use. Also, the design is just so elegant, I can't resist. However for more heavy-duty gaming, I'll go back to the PC.
I like Macs just feel so limited on being able to get your hands dirty with them. With Windows I have a free Windows 7 Ultimate disk with unlimited installs on it. It was easy to make the disk with the iso and activator. Just feel like windows is easier to mess around with. Love how clean feeling the Macs are though. Just to flashy for me most the time.