Im just curious, the only thing that the 650 seems to lack from my standpoint is those nice velvet like earpads. They look to be about the same size and I was wondering if I could swap the 650 earpads out for the 750's eventually?

I spend about 75% of my life on airplanes and in hotels and I just recently got a pair of ultrasone proline 650 to use with my portable audio/video player. The prolines fold up in two different way so that they can be easily transported (a must for me), but for the life of me I cannot find a...