You can get a great set of over-the ear headphones for $100 or less - pick up Grado's SR60i or Shure's SRH440, and you'd need a keen ear and a petrified ass to muster any sonic gripes. So spending three times that much would seem downright stupid.
Sounds so sweet, you'll want to re-rip your entire music library into lossless files; Memory foam earpads block a ton of ambient noise; Go ahead and wear 'em in public - the low-profile headphones won't make you look like a ham radio operator.
One small gripe: The tiny sub-earpad tab that holds the cable in its routing channel is poorly machined and sharp enough to cut the rubber cord jacket; Pricey? Yep; Worth it? No doubt