I've had:
Performa 630, Powermac 6100, 7600, G3 Beige, G3 B&W and a Powermac G4.
They all worked perfectly, infact I still have my performa 630, ah brings back memories!
In that time I've also had a number of PCs, from Windows 95 to XP and all of em had atleast one big problem I had to sort. Nothing like that with OS7/8/9 or 10.
I've converted 8/8 mates so far, 4 to iBooks and other 4 to Mac
Books. What you think of that eh? (oh and I've never been asked for support from em, while I have been asked for help with PC ppl and all 8 of em are pretty much novices to computer usage.
Faster? Nope. Use C2Ds now, and G4s/G5s were NOT slow for Pro use. I have a G4 still held its own against my AMD64 X2. Upgrading, ummmn yea, until a new socket comes out with new mem and oh look, new PC time!
Easy to fix? Why do you need to fix em in the first place LOL
My PC crashes a hell of a lot more than OS X. Only yesterday did I need to spend 2 hours making MSN work on my laptop, 2 hours!!!!
Have you used one for a month, doing all sorts of work? If not, you really don't have an valid opinion IMO. I've used both for 10 years, and Mac always comes out ontop, thats why im buying a MacBook Pro for photography work.
Mac = Work
PC = Gaming.
How it always will be here.
and for the OP.
Get a Mac Book/Pro, I was going to get a Mac Pro but then being a photographer a laptop is a much much much better idea