I don't own one, but i (have to) work with them every week on college when i'm holding graphics design classes. But for graphics work @ my company and for home use i prefer PC's, as i can adjust Windows to better suit my needs. XP is stable enough, and if setup and maintained properly can function for a loong time without problems. Besides, PC's are cheaper.
I like some things on Macs, but all the time i feel like i'm being treated like some idiot - i have the feeling like OSX is trying to simplify all the things without my will... and i like to always have access to some more advanced options. Or maybe i just don't have the will to scratch deeper into OS
I'm sure that Mac appeals to many ppl... it's just ain't my cup of tea...
And yeah... i just HATE the one-button mouse. Especially the mighty mouse one(okay, that one technically has two buttons, but..) because the frikken tiny ball is soooo damn opposite of ergonomic... but i like my logitech 9 button mouse because i can get better functionality and speed the work a bit :)

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