We felt Sony's WH-1000XM3 had better overall sound quality, but the 700 is still a superb pick between the strong noise cancellation, top-notch call quality, easy-to-use controls and comfortable design. And if it matters, the looks are more 2019 than 1999 like its ancestors. It's certainly a competitive offering at its $349 sale price.
Take heart if that still feels like overkill. Bose's earlier QuietComfort 35 II headphones are also on sale at Amazon for $279 instead of the usual $349. They won't have the slicker looks, touch controls and other perks of the 700, but the QC35 II has been a go-to choice for frequent fliers for a reason. You're still getting strong noise cancellation and pleasant sound quality. If those are all that you need, you might as well pocket the savings.
Buy Bose 700 on Amazon - $349
Buy Bose QuietComfort 35 II on Amazon - $279