These headphone have garnered some great reviews for audio production and are also one of very few to have such a beautiful retro design IMO. Currently priced at $499 RRP, Co-op have it for $399.95 if you're a member (otherwise it's $449.95). Using the code you get $40 off, and further cashback from Sennheiser Au brings this down to ~$260.
Note these do not have active noise cancellation, only the wireless ones do.
Don't forget cashrewards, which brings this down a further ~$20. And if you're going away, you can also get TRS on this, essentially getting these headphones for ~$200!
Make sure to get the correct model (only black version available):
iPhone version
Android version
Wow. Great price for great headphones. I have the first version. Very very happy. This would be better with the nose canceling. In saying thay, I haven't tried this. I've tried the boss qc, and they're very good (noise cancelling wise)