Sony MDR-AS50G Active

Pros: Great fit, extremely lightweight, crisp sound, good design, and best of all, it doesn't fall out of my ears!

Cons: right earphone doesn't stay all the way in sometimes when I shift my head to the right...

Summary: alright folks, I must have gone through 10 different sony "workout" designed headphones over the course of the past fifteen years before coming across this one. I have to hand it to SONY on this one. Not only was this one affordable, but it met every expectation of mine for a workout headphone.

This is obviously different from the earphones that simply wrap around your ear (and then fall off after the first 3 steps in your jog), or the in-ear designs (that fall out of your ear and end up dangling against your chest or workout equipment). With this new spiral design, it makes sure that the earphones are pressed against your head with no chance of it falling out of your ear (this has been the biggest pet-peeve of mine)

The sound quality is pretty good. I'm not an over-the-top f-ing audiophile or anything, but I will have to admit the sound is very clear and crisp, even at the loudest setting of my iPod nano. (I hate it when some earphones output distorted sound when the volume gets to be too much)

In conclusion, I've found my one and only workout pair of earphones and won't be replacing this one any time soon.