I wanted to share my experience, as frequent traveller on Swiss.
I accumulate about 35-40 rotations per year and most of the time on A320 family aircraft.
Since my first trips on BCS-100/300, I've noticed a quite disturbing and loud cabin noise.
Maybe, the aircraft will be among the most silent ones, but inside the cabin comfort is lower than A320 due to a louder ventilation or aerodinamics background noise.
It is apparently more difficult to speak and listen to the cabin members.
To confirm my first impression I did a noise recording on A320 and BCS-100 and compared the average results, based on a 30 second recording sample, on same cruise altitude and speed, passengers silence, seating on window side at the middle of the airplane.
For Airbus A320, 63 db
For BCS-100, 78 db
That's quite important difference !
Anybody else confirming that ?