These headphones are really rather good. The sound quality is far superior to the standard ear buds you get with an iPod/iPhone - these give a nice detailed sound with a good solid bass. They are comfortable to wear and do a reasonable job of isolating you from the noises around you. The wire has also been thought about as its flat and somewhat springy, meaning it doesn't tend to tangle. The addition of a microphone is especially handy if you use them to listen to music from your iPhone as you can switch to making phone calls without having to swap the headphones over.
I'm not saying that you won't ever find a better set of headphones if you pay more, but these do a fantastic job.
-PROS- Comfortable Look good Good overall sound, but bass especially so Wire doesn't get tangled Can be used for phone calls (has microphone)
-CONS- Um....if using for phone calls the sound isolation effect is a little too good as you can't hear yourself speak properly. Can be solved by slightly moving the headphones off your ear to allow sound in. But that's just being picky!