I love the iPhone headphones.
I live in California, and with the new hands free law, it was really cramping my style. I drive all day and tried a bluetooth and a hands free speaker....both weren't great.
The sound quality is very good (particularly for calls), the mic is good. For me they are just a bit big on the fit, so my ears get sore.
But overally, I wouldn't trade them. Definitely try them before you buy something else.