In short, avoid.
They look very nice, and fit okay. But these are quite honestly some of the worst sounding headphones I've tried. They're heavy handed with a muddy low end, and no mids and highs. I had to tone down the lows and cranks the highs to max just to get a remotely "normal" sound out of them.
If they were budget priced at $10, they could maybe pass as good value (in that they're at least still better than the stock ear buds that come packaged with iPods and MP3 players).
But at $50? Definitely not worth it. There are plenty of other headphones around the $30 mark that blow these away. And for a bit more, you could get a cheap pair of Sennheisers that'd be incomparably better.