Summary: I've had these for about a month. For the most part they do stay in place during runs (a couple miles or more), but I've noticed if I sweat too much the left side starts to fall out. They're also uncomfortable to wear for extended periods of time, and the earpiece rubs the inner portion of your ear if you aren't careful. All-in-all, for the price, they're not bad. There are better ones out there though if you want to spend +$20.
Summary: I found the sound quality of these headphones to be good, but after wearing them for a while my ears hurt. I do not consider my ears small, but I would not recommend these headphones to anyone who does not have large ear canals. I returned them and ended up purchasing another pair of headphones instead.
Summary: Sound quality is great. I like everything about them except the bud that fits in the ear. There is a small protrusion on each bud, which I believe contains another little speaker. The longer you wear them, the more each aggravated my ears. Otherwise, everything about them is very good.
Summary: The sound would be better if the earphones fit better over the ears. I guess I must have extra small ears, I bought these because I felt that the MP player would be better to hear with being I couldn't fit the ones that came with it in my ears. The part that goes over the ear was made of soft flimsy rubber that made the earphones sag over the ears with not a snug fit.
Summary: I bought these to use when running, but they keep falling out despite the adjustable earpieces. They look cool and probably ok for community to work by foot, but for running, they aren't very secure - unless you use tape. The sound isn't too bad though to be fair.