I started recording on a mac, then switched to a PC. Big mistake, crash, crash, restart, restart. Couldn't get anything done. I'm back home now, got me one of them mac pro quads with four cores. I'm flying now, it even comes with recording software, garageband, it's pertty cool too. Real simple, easy to use, and doesn't get in the way.
It even runs windows too, but why bother. I don't need the headache. Can't beat a Mac for recording, been using them for 20 years now.