I ordered a pair of these online for only $30- the same price as the iphone headphones. They come with a 18" built-in cord and a 24" extension cord, connected with a light and small connector. The main headphone jack can be modified to work perfectly with the iPhone by simply cutting back 1/8" of soft insulation around the jack. It looks so good that it could have been made that way. But that is not all. The extension cord can be modified in a similar way, cutting away a little soft insulation and then scraping away a little plastic, either with a razor blade (my choice) or a Dremel tool. You have then effectively made an awesome adaptor for other headphones or outputs. If you subtract the cost of buying another adaptor, the headphones (kind of) only cost $20. I like the extension cord more than any of the adaptors they sell in the Apple Store. The Belkin one is especially horrible, being so stiff that it is constantly coming out, looks retarded, and won't work in my pocket. Finally, the sound quality is somewhere between the Shure E2Cs and the included headphones. They have more bass than the Shures, but are definitely not as clear. Keep in mind they cost only 1/3 as much though. They FEEL much better than the Shures, which are just too big and heavy for my ear canal. They also don't make me look like a total nerd, according to my fiance. I'll try and post pictures later of the jack modifications I made. Perhaps, if I'm feeling very adventurous, I'll try and graft them onto an iPhone headphone cable (for the mic). Has anyone here tried this with these?