They say that the ANC is very powerful but the sound quality isn't that good. I'd recommend getting the Sennheiser's Momentum 4, they have an amazing sound quality, not that power ANC than the Sony's but it depends on what do you prioritize more, and the price range isn't that different.

Regarding the quality of the object itself, if you can I seggest you try both in person, personally I felt the Sony's to be more cheap in the quality of the build than the M4's.