Well, sony has lots of different headsets, in general, sony is known for better outdoor headsets, with features like waterproofness, better haptics and nicer body. if you want better sound (although, sound is subjective) getting audiophile headphones is better, like the senhisser hd6XX or similar.
Open back headsets sound better in general too.
but, to be honest with you, they don't sound "better" they sound more natural and with less curves.
The sound is "flat" and is much more true to life.
But depending on what music you like that isn't always better, like me, i listen to pop and electronic, and i use razer nari ultimates (they vibrate on your head with base. it sounds stupid, and its a pain to turn on everytime when i listen to music, but its pretty good actually.)
For most people, a normal mid range "gaming" or just everyday headset is good enough for sound quality since the difference is small.
even 1000$ headsets are not that huge a jump from "gaming grade" hyperX Cloud II or something.
but again, everyone's ears are different and some have much different opinions.
The WH-1000XM3 have good sound, but there are definitely better options.
But, they are VERY comfortable, are wireless, and have THE MOST INCREDIBLE ACTIVE NOISE CANCELLATION EVER (sorry for caps. im serious though, its amazing.)
they also have google assistant built in and overall solidly built.
theyre really good headsets, but have more going for them than just the sound.