I donāt have a battery drain issue, but I have tested the quality of features between the first and the third version, and transparent mode is non-existent compared to the first. I suspect that ANC in (3) isnāt that great either.
The most prominent QOL in (3) from the (1) version is the sound quality. Must admit that ear (3) sound is way beyond (1).
But the quality of the case on (3) is sucks, it shakes and creaks. In (1) it feels steardier.
I am convinced that at least the transparency mode should be improved with firmware.