As someone who bikes everyday, I wanted something that would stick, be comfortable, produce good audio, while reducing wind noise (at least all to a reasonable amount), while costing less than $50.
Turns out that the SHS8100 only produces reasonably good audio. However, when biking, the wind noise is too loud for me to appreciate the music.
I also had trouble finding the suitable earpiece (which I still haven't), which sticks and somewhat reduces outside noise. I am wearing the small ones that are included with the earphones (as they are the only ones that actually fit), but even these have to be pressed back every 5-10 minutes. I can not imagine this being a good set for runners.

These are the best in-ears I've owned so far. Although they seem to break (i.e. the left -always the left- bud stops producing any sound) no matter how careful I am. However, the comfort and isolation level make it worthwile.