Used to be OB's favourite NC headphones:
NEW BOSE® QuietComfort 35 Wireless Headphones II - Black at Myer ebay. Also available in the silver!
Use code PRESS for 7% off and also combine with ShopBack 10% to get $36.74 back in your pocket - ie final cost $330.62
Even better timing if you want to take them OS with TRS.
Pretty average price, been down to $311 without the need for cash back promotions.