Ah, okay. In a recent topic on another form, the OP was asking for headphones he could swim with. Sorry for the confusion.
Fair enough, I suppose. There are companies that will build you IEMs that are molded to your ear, so it probably wouldn't hurt.
Also, Shure makes some with memory foam... probably wouldn't hurt either.
Bose is overpriced, IMO. The earbuds I have now have unbelievable sound quality (especially in the bass range -- it feels like I'm in a rice rocket with a $10K sound system), and they're cheaper than the Bose earbuds, which have noticeably worse sound quality.