Any Audiophile Athletes out there?

I've been using the Bose in-ear headphones for about 6 months now and they have two big advantages over any other mid priced headphones I've used. First, they are not a true in-ear bud like the Shure's (which I've had and sold) so they do not completely block out external sound and second, they are absolutely the only headphones I've tried that can produce deep clear bass without being crammed all the way into your ear canal.
I don't know if I qualify as a true audiophile, but I've been a professional musician for 20 years and use Ultimate Ears molded in-ear monitors on stage. These of course can't be beat, but I don't really want to use 1000.00 headphones for running!
In my opinion and having owned both, the Bose are much safer for running (I personally never bike with headphones on) and stay in my ears much better than the Shure E2's that I had. The sound is also superior in my opinion and the sound stays the same throughout the workout whereas the Shure's would constantly start to slip out of my ear canal and therefore lose all bass response as soon as I started to really sweat. Since the Bose aren't actually in the canal, even when I get really sweaty (or run in the rain like yesterday), the sweet bass still keeps thumping and I can hear every vehicle around me.
Here's a link to their site and if you can get to a Bose store to try them out, I think you'll be sold.
http://www.bose.com 
It says they're 99.00 USD but I got mine on sale for 79.00 CAD so shop around.

Best of luck!

-Mike