PancakeI don't own these headphones, but I used to own the Momentum over-ears and am currently trying to sell my m50x. If these sound anything like the AKG K7XX, but in a closed back headphone, then I would immediately jump on these. The only thing that has stopped me from purchasing these headphones is the lack of a removable cable. My suggestion would probably be to get these headphones since the price is absolutely fantastic for the sound you are getting compared to the other two choices.
CukedaddyI'd do the same thing if I was you as well. What a coincidence that they would drop here so soon after my comment. It's a good thing you didn't respond earlier or someone would have been an unhappy buyer.