Apparently in tests the new Sony’s are slightly better NC than the Bose, but I tested them in a store and preferred the audio quality of my Bose QCs and couldn’t personally tell a difference in NC.
I couldn’t live without my Bose QCs and they go everywhere with me. You don’t realise how much noise there is in day to day life until you’ve worn some good NC headphones around for a while then forgotten to take them with you one day.