Well, my K267's have seen roughly about 100hrs of burn-in now at least, including a nice bass workout last night blasting non-stop DJ Billy E (if you haven't heard his stuff through a bassy headphone, do so now -- total brain massage ). And... not much more change from the last time I checked. The bass is clearer and a lot more controlled than it was originally, but everything else is still pretty much the same from the ~40hr burn-in mark.
These are pretty good headphones, and if I haven't put on any other headphones first thing in the morning, I do genuinely like them for a while. Like I said, they kinda remind me of my HD600's (which I love). Unfortunately the bass extension and imaging are still deal-breakers for me. Let's also not forget that I got these for $350 (that's more than I paid for my HD600's!). I know there's a lot of people defending them, and maybe they got them for a better price, or they're just going off on the sound of the K167's because they supposedly sound so similar, but I think the pricing here is a major factor of why they seem to be 'meh'. If the K167's really sound that close to the K267's, considering that they are less than half the price of the K267, then that is a legitimately good deal on a great pair of headphones! Otherwise, let's not dismiss the fact that the K267's are still generally priced higher than a lot of their competition here (namely, the controversial M100's).
Anyways, I'm about to pull the trigger on some M100's. So I could have a comparison between them and all my other cans (including the K267) later this week if anybody's still interested (given that my comments seem to be getting ignored for being too critical ).
Good choice. I am also now reading good things about the Yamaha PRO 500.