Do you have small/large ears?
for ~$100(on sale or something currently at amazon but is normally ~$200, very good reviews from what I saw):
http://www.amazon.com/gp/product/B00...461476-3877747
I use these(great headphone for the price ~$50, but has moderately bad noise cancellation the potential to be slightly uncomfortable to me at least after 4+ hours of use sometimes...I'd imagine that that is true with most headphones though...):
http://www.google.com/products?hl=en...sonic+RP-HC100