Depending on where your cutoff for "REALLY high quality sound" is, the Bowers & Wilkins PX are pretty solid, and people on /r/headphones seem to like the Sony WH1000XM line.
I can also recommend the Sony WH-1000XM line. I have the XM2, though the model 3 is out now. Some of the only headphones out there that beat Bose in active noise-cancelling. The sound quality is top notch; the one complaint people tend to have when I show them off is that the earcups are on the small side and they touch some people's ears. Doesn't really bother me though.