I wear Sennheiser PX90's when I am out walking (used to use Portapros too) and I have to fight the urge to crank the tunes to drown out everything....if there's too much traffic noise, I'll just pause my tunes. But I won't use an isolating design in those circumstances either....I've been hit by cars twice without headphones on, so I'm not taking any chances....lol.
yea, anyways living here in Virginia Beach is actually quieter outside than it is in New York or other places. As here Driving is more practical than walking.
But i dont wear my Headphones outside while walking or even Running on a treadmill.
I wear them in peace and comfort, no matter how loud my surroundings are.
as i ONLY and MOSTLY do wear them when im sitting at home, in a bus, train, or long car ride.
the only loudest ambient noise i would hear would be in a School Bus. and i dont crank my volume loud enough, only enough so i can hear myself talking. and i dont crank it louder so i can hear every aspect of noise either.