Hi Joe,
Wanting to understand what all the buzz is/was for the Harbeth sound I was able to listen to several tracks at RMAF 2013 with a pair of Monitor 30.1 driven by a Bricasti and Metronome front end.
They sounded best at lower volume levels and were quite involving with beautiful midrange and surprising bottom end too. As the setup was pushed a little louder (people behind me asked for more volume....I was in the sweet spot controlling the volume) it became brash and compressed sounding to my ears. Not the most pleasant experience IMO. Yes, it could have been the room or front end, but I walked away pretty unimpressed.
I too do most all my listening at lower levels (60-80db) and in that regard the 30.1's were outstanding. However, there are occasions when more volume is required and for me that setup blaring at louder levels would drive me out of the room sooner than later.