I got some of the mid priced ones for my birthday. I like them just fine, they sound good, and they are comfortable. The only thing lacking is the clicky thing to answer your calls and control your ipod.
If you are looking for a decent pair of iPhone headphones, then I suggest either the UB5's from Ultimate Buds, or the Maximo iP-HS2 headphones ( look on Amazon.) both are moderately priced around $50 or so.
I hear mixed reviews about the Skull Candy headphones. Some swear by them and others curse the day they bought them.