I think I shared the same view as you.
Yup, the signal will be dropped off on the left bud once in a while when you are in area with lot of receptions around. I also don't quite understand why the right bud battery level is always lower than the left bud. My guess is maybe the right bud is the master bud which take in more battery.
Sound wise would be fantastic if I can get a better seal, maybe changing to a better ear tip ?
I find that the hissing high is quite prominent on higher volume on certain setting or maybe I should say the serpents ( spelling correct or not ).
Bass as what I mentioned is with good texture, slam and punchy. I think the bass is one of the best which I had heard so far and surprised that with such a small bud can really gave such good lows.
The mid is crystal clear and it will enaged u to the music not to the extent of bright.
The high is also good but then I notice hearing a bit of piercing under higher volume on certain music setting
Overall I love the sound quality and hopefully they will improve the sound quality and also better platform in their later firmware updates.
If only can have a seal like my custom iem will be perfect not saying that the ANC is not good, it's worked well but would be even better if the seal is perfect

. I think Sony seal is much better probably because of the design but it's much bigger.
Actually I preferred the way how the charging case opened as to the conventional type of opening because I encountered a few times the buds dropped out of the case on my previous Naurl NT01 when I kept in my small bag and the build from one look is very very nice and premium design.