Well... considering Disney uses PC's running Linux for all their shit, I wouldn't talk just yet about 'serious pros using only MACs'
The facts are that, yes, Mac's are supremely fast, and yeah, PC's can be unstable, but this is also a software thing too. OSX is Unix based, and thats why its so great. Run Linux on a PC and you'll see a huge differance. Plus, there is a HUGE friendly user base for Linux users to get any info that they need... I'd take Cinelerra (the Linux open source video editor) over Final Cut or Premiere any day...
I have nothing against Mac's, and I absolutely love the screens, they are unbelievable. But to tell you the truth, I'd prefer doing everything myself. Kinda like the differance between a standard and an automatic transmission in a car. A Mac would be the AT, being extremely reliable and easy to use, while PC's would be the Manual transmission (running Linux anyways), you get more 'gas mileage' per se, you have more control.
'I'm the best from the east, I'm a wild crazy beast' -
Andrew 'Dice' Clay