As I posted in the K167 thread, I tried the K267 for about 10-15 minutes with some of my music.
K267 has better build quality, metal instead of plastic.
K267 is heavier and not as comfortable
K267 sound is similar to K167
K267 bass can be adjusted in 3 steps (all sound good)
K267 is much more expensive
K267 doesn't isolate as well as K167
Of course the K267 sound great, since it's similar to K167, but I believe what you really pay for is the build quality.
Thanks for the quick reply.
They might be worth looking into... (just for the heck of it... still happy with my main HPs... ;))