QC 45 is announced, available to preorder and less than two weeks from release: https://www.bose.co.uk/en_gb/products/headphones/noise_cancelling_headphones/quietcomfort-headphones-45.html#v=qc45_black ASR and crinacle both rate the Bose a little higher. I think I would probably wait for the QC45 or try and get a deal on the QC35.
Qc35 by a long shot for comfort. The Sony's clamp too hard for my liking and are very uncomfortable after 30 mins
XM3s mate - better sound quality in my opinion and were more than comfortable The Bose are lighter in weight, but I preferred the sound from the Sony Currently have the Xm4s, and if your budget can stretch, would highly recommend those. I got mine for £220 recently following some random offers via here
Owned the XM4 and the Bose QC35II, now only own the Bose. Sony don't even come close for comfort and sound is fine on both.
Very comfortable indeed.