Back to headphone shopping

I figured that $130 prices on the K550 headphones was too good to be true. The seller just said they could not fulfill the order. I was kind of expecting that though I thought they would drag me on for a week or two first.

Now I'm back to headphone decisions again. It's down to between the Sennheiser 598s or the Momentums.

EDIT: found a pair of Momentums on open box at Amazon for $160, went with those. They're closed and I live in a cubicle farm.