If you are talking bluetooth, then I would guess the Sennheiser MM 550 or MM 450 would be the best, depending on if you prefer over the ear or on ear. I have a pair of the MM 550's on order from amazon, I'll let you know how they sound.
Sennheiser Momentum 2.0 headphones are fantastic, but they aren't cheap. They list for around $500, although you can probably find them for half that. If you look at them, make sure that they are the 2.0 version, the original had some connectivity issues with bluetooth.