I recently had to retire my ATH-M150s after an unfortunate accident and I was in the market for a comfy pair of circumaurals to replace them on the cheap, before I invested in another pair of studio monitors. I bought a pair of these the last time they had them up, and I've been very happy with them! I can definitely wait for the right pair of replacements for my ATHs now, since these fill a hole that I didn't even know I had in my personal collection: versatile traveling companions.
Sound: I did a bit of research on head-fi and found good reviews overall, which prompted me to give these a shot. I have to agree that the sound is pretty balanced (if a little bass heavy at times), natural, and quite clear. Bass is not overwhelming, but definitely very adequate. Very pleased with these as my travel cans, because they're not meant to be "noise-canceling" but do a good job of keeping external noises toned down -- but I can still hear the stops being called on the bus when listening at a low-moderate volume. They don't leak much either, so I'm comfortable using them on the crowded bus.
Craftsmanship: These headphones fall into the "less is more" category, without a doubt. The design is minimalist and extremely sturdy because of it. There are very few joins and spots that need watching for weakness. The ear cups are extremely adjustable and very comfortable, with some kind of memory-foam type padding.
Features: The fact that they came with two cords that you can interchange was one of the selling points for me, and it's come in handy. I can unplug the cord from the headphones and stick everything in the travel case without worrying about damage. The tension of wrapping cords around headphones to transport or store them is one of the worst things for headphones, so this is a very smart feature. Both cords have an in-line volume control, play/pause, and mic, which is handy, but I have a small complaint. If I've zipped my jacket up high, the buttons will sometimes catch and push accidentally, which can be annoying. I've just learned to be sure the cord is in good position.
Price: This is an excellent deal for the value, not just in comparison to the "list price." They're worth the price.