Got these in yesterday and I must say, my initial impressions even with the replacement Brainwavz ear pads was quite disappointing, BUT, after seeing so many reports of these needing a very long burn in time I proceeded with this step, and after only 28 hours of burning in time under their belt, they're blowing me away! I would have never predicted I'd be saying this (especially after their sound quality out of the box), but they're outperforming my Sennheiser 58x easily, and if the reported 200 hours is needed for burn in, then I'm even more intrigued what they will sound like then. Now, having said all of that, let's make something very clear, their build quality is, umm, nowhere near the build quality of the Sennheiser 58x, not even close, and this doesn't just effect something superficial, this also affects fitment, as the over ear speakers only swivel up and down, and have absolutely no movement side to side, which means my Brainwavz angled pads aren't as functional as they are on my Sennheiser 58x, meaning I'm definitely (already ordered) a non angled set Brainwavz pads because of this. Also, the sound signature is GREATLY impacted by better earpads, and in my opinion a much needed upgrade. Now, obviously sound trumps everything (in my opinion) regarding headphones, but I'm relatively concerned these won't stand the test of time due to the lack of build quality. In the end, these were DEFINITELY worth the $69.99 in my case and I'm very happy I decided to take a chance on these.