I am also trying to break these, or at-least loosen them up a bit, I like the design and comfort a LOT more than my older MDR-100BNS which have the best sound in my opinion. I sold the Sennheiser Momentum Wireless a while back due to sound quality when compared to the 100ABNs. The Momentum Wireless had NO life or character, it was too balanced for my taste, also the Bluetooth connection kept disconnecting all the time while riding the subway in NYC.
My main requirements are:
1- Noise Cancelling (I Ride subway to work for 55 Minutes per commute)
2- Wireless ( I cant stand wires, specially while wearing a winter coat)
3- Sound Quality (Not so bassy but also not dead like the Momentum Wireless)
4- APT-X ( I use a Android phone with APTX)
5- Over-Ear & comfort ( I need earmuffs due to the winter in NY also nicely padded)
6- Aesthetics ( in black and not insanely huge)
The Sony MDR-1000x seem to check almost every box at this present comment, altho the 100ABNs do sound a bit more exciting, but I HATE the size and annoying creaking from all the plastic, which is why I keep pumping pink noise to the 1000x for hours straight.
I have 30 days to return if the sound doesn't improve to my taste, also, the bluetooth connection is better than the 100ABNs. I tried the BOSE QC35 and Altho I did like the feel and comfort of the pads, I didn't like the sound quality, the lack of APT-X was a HUGE turnoff for me.
Still early, just two days with the 1000x so far, lets see. I'll update in the coming week or so. Thanks all!