I've been away for a bit, so I'm catching up on this thread. Let me just say that my headphone EXP just shot up 9000 points because I live in Japan now and I can try any headphone I want. I've tried so many of the popular headphones from $150-1000 and nothing really impressed me except for the new Sony MDR1. So many disappointing headphones out there for the price they ask. The K167 still dominates at it's price point an I'd choose it over a more expensive headphone easily, aside from the K267, which we don't know about it.
I've currently been looking for a donor body to harvest and that hasn't been an easy task as cheaper headphones have crappy earpads and isolation.
So if I was to compare the MDR1 to the K167, the MDR1 has noticably tighter bass punch. Not saying that's good or bad, but I didn't like it at first until I went through a few songs with it. However it's friggin expensive here in Japan. Was like +$400.
Also throwing this out there, but the AKG K540 is also a very good cheap headphone at it's price. I might be picking one up as my beater headphone.
Also Also, another headphone I was really interested in was the Beyerdynamic COP. Let me just say K167 > COP. They had too much bass and sounded boomy. Poor vocals also.