I'd recommend the Skullcandy Smokin' Bud they retail $30 but I have seen them for $20 at my local Fry's Electronics.
I found out about them after reading a review @
onheadphones.com they have pretty good reviews and I just happened to see one of the ones I remember being rated 4 stars on sale at the store for less than they were online so I picked em up. No major audiophile but pretty happy so far.