I fly both, PF from what I hear has a very realistic flight model, now AH is more action like, more for everyone rather then the realistic freaks. I fly PF for realistics and I play AH for the fun. I've flown since I was 12 (I'm 21 now) and I'll tell ya, I've never flown in a plane that stalled as much or zoomed as well as AH planes! Thats also been said alot in many forums, but it's easier to get a hang out them most other sims and thats why I like it.
Edward