Two days in and I have no doubt that the sound is superb. I've been using them while working, listening to albums that I'm very familiar with and I can't fault the sound one iota.
But this is a big change of usage for me. I usually have music playing in the background while working, either the radio or just streaming if I fancy something other than the radio. I don't know if I'll get into the habit of wearing headphones but in the honeymoon period, I am loving them.
I'll see how I feel after a week or so but at the moment, I have a strong suspicion that they might be going back. I was very keen to try them and with the current situation, there was no other way to do that.
The 'case' is a joke though. Whoever thought this was a good idea at Apple deserves to be fired.