Summary: Great Headphones! If you don't like your head being squeezed and your ears not being able to breathe this is the pair for you.
Pros: These have amazing sound! A major upgrade from my previous headphones. Excellent bass and all around sound. If you have an MP3 player with good EQ settings it'll sound even better.
Cons: My previous behind the head headphones had more of snug fit, so I wasn't losing much sound while still being open. These on the other hand I feel like they could be a little more snug. I have to turn up my volume a bit more when in a vehicle compared to my previous headphones to get the same volume level. But I can live with it.
Summary: These are really nice headphones, particularly for the price. Coming from a $20 pair of Sony's, I can tell there's a HUGE difference. They sound very good with my MP3 player, and they sound GREAT with my laptop. I don't know if this is a power source thing, but thee's a noticeable quality improvement on my computer. Still, they sound great both ways.
Pros: -First and foremost, these have really fantastic low-range. The bass and drums are thumping (in the best possible way) and clear
Cons: -Some sound leakage... but not a lot. This is a VERY minor gripe. At about 22 of 25 on my MP3 player, I could clearly hear all but the bass coming out of these headphones from 3-4 feet away. At 25 of 25, everything was pretty clear. HOWEVER, at those volumes it hurt to have the headphones on my ears; I would never listen that loud, so this is not a big deal. At normal listening volume, I had hardly any leakage at all (less than with my old Sony G45's).