I have not heard any of the Be versions. I do know that the silk domes blend beautifully with the paper cone drivers and create a seamless sound top to bottom.
Eric has never tried to upsell anything in my discussions with him. Always found him to be very open and honest.
Regarding the question of listening at low volumes--I have never felt the speakers need to be pushed to sound full and balanced. But when pushed, they easily maintain their composure.
Did you gentleman order the standard Electron or the SE version?