I agreed with many of the comments of how the Harbeth sound lacked clarity, detail and dynamics... UNTIL... I found the right electronics to drive them - which are the amps the designer demos them with - the Hegel amps.
They are a totally different speaker with the right electronics that match their impedance and power requirements with sufficient damping to properly control their drivers. I would not have kept them, otherwise.
If you haven't heard them with the Hegel amps, or others similar (such as the Mac MA252 SS / tube hybrid) - you haven't really heard the Harbeths.