Skullcandy are great, but a little pricey IMO. I have marshmallows (http://www.amazon.com/JVC-HAFX33P-Ma.../dp/B000IS758E). Cheaper, stay in your ear really well and the sound is perfect.

I'm bumping this up to thank OP for asking this question, and also to thank Aclai & Mkroyer, who are absolutely right about the Philips with earpieces.

The wire recently shorted on my Skullcandy buds & I needed to replace them. (Of course this happened shortly after this thread was posted, so I believe OP jinxed me. ;-) I took a chance & bought the Philips, on eBay, so the price was quite good. (I think 99 cents plus shipping.)

Just wore them today. Once I got them on, I did not have to touch them. Not even once. No slipping. They DID NOT MOVE. I was on an arc trainer & then wore them while lifting weights. The only drawback is the left one pinches my ear a bit. But I was also wearing glasses, so there was a lot hooked on back there. These particular clips are interesting because they have a distinctive "left" and "right."

So I'll be the third one to endorse this, conditionally -- because they don't move. I believe the sound quality is better on my Skullcandy. My third criteria is how long the wires last without shorting, and the jury's out on that so far.

I stick with my Apple headphones, always have. I thought about trying Bose, but something about the sound quality of Apple has kept me hooked. They don't fall out of my ears, haven't had that problem.