Damn, I forgot how good these headphones sound. I finally picked up my Sennheiser BT cans from the repair shop today - the pair had some significant crosstalk and so I left them to be fixed two months ago. Apparently Sennheiser forgot all about them because after reminding them last week, they decided to give me a brand new pair instead.
They'll need a week's worth of burn-in, though, at the very least.