Sorry I didn't respond earlier, Marvin - I wanted to play American beauty on my system bfore I tried to describe the sound of the Ushers in a UK context! I have done a google search and found only one retailer offering the high end Ushers in the UK. The 6381 model is listed as the top of a range of 3 and retails at £2400. In that price range we have a vast range of choice from major brands but (to my knowledge) we don't have our own versions of people like Jim Salk or Louis Chochos. Some of the 'old' brand names are no longer British built but come from China just like your Ushers. (Wharfedale, Mission and Quad immediately spring to mind)
My system couldn't be more different (small, infinite baffle stand mounted Quad 10Ls biamped with SS Quad 77 power amps) although the room size is similar. Clearly your Ushers went way lower than I am used to. Prior to buying the Quads (in (1998) I had Infinity 1001s which if memory serves was a transmission line enclosure with a 12" woofer - and I miss that bass! In my office I am presently listening to vintage Leak 2030 sandwich speakers which have an 8" woofer like the Ushers so I played American beauty there. Now these are probably getting tired, they must be about 30 years old so the cone suspension won't be performing as it should but there was more bass than the Quads - still not like the Ushers though.
I couldn't possibly find room for them in my home. If I had a dedicated listening room like you (and £2500 spare) then it would be interesting to audition them. At 90bd efficient they could play with a range of lower power amps than you have and I think it would be interesting to hear them with amps which have good damping - or my current favourite, something based on tripath chips. impressive as the Dodd monoblocks were I think there is probably something with better synergy (with the Ushers) out there somewhere. In fact, I think I preferred your current Denon to the Dodds despite there being some scope for improved bass control.
Oh! that was a bit long - perhaps I should have PMed you!
Thanks again for the hospitality.
Jim