Yes, the P7 are quite a bit bigger than the P5. The P5 are the right combination of practical size, comfort and isolation which is rare. The P7 strike me more as headphones you'd use at home, on walks or commuting. For longer travels and flights something more compact might be more ideal, though the P7 would probably do just fine there as well. I've ended up using my P7 at home the majority of the time instead of my HD 800, and outside I'm using the Kef M500.