Similar experiences with my Quiet Comforts II. I’m not using the shell it comes with, so it’s buffed a little, and had to replace the earcaps twice just because they get worn down in my backpack, but they work absolutely perfect.
Sure, the battery life isn’t as great as it was when I bought them in 2017 but for single-day usage they’re fine and I just give it a small micro-usb-powered pep-talk every night to use them the next day.