Summary: This past summer I was looking to upgrade from my mediocre Sony behind-the-neck on ear headphones. I wanted to stick with open design and behind the neck, and these seemed to fit the bill nicely.
Before going into any detail whatsoever about the sound quality or pros or small cons, I'll say this: my pair broke. Not so that they're unlistenable, but I had to fix them up.
Pros: Nice bass, good overall sound signature, nice looking (if you like the behind the neck look)
Cons: Mediocre build quality, low volume even at high volumes on music player, fair sound leakage