i'm familiar with the sony xm4, senn and focal bathys--the sony have the best anc and the bathys the best sound, although its anc isn't that far off. that said, as @fatdaddy2 suggests, even the best bt isn't going to trump good wired phones for home use--personally i'd get a cheaper anc phone for your flight like the <$100 1more sonoflow (which sound good enough and have great battery life) + a good wired pair for home use.
Upcoming Trip
My wife and I are taking a trip this summer for our 25th anniversary. I am looking to buy some wireless headphones for the trip since we will be on the airplane for 8-10 hours and was wondering if any of you have experience with Sennheiser Momentum 4, PSB (I don’t remember the model but they are $399), or Focal Bathys (are they really worth double the price). I do have Focal home speakers so I am familiar with the house sound if the headphones have it. Although I am primarily buying the headphones for the trip, I am sure I will use them at home when we return.
Thank you for sharing your experiences!