professorsvsu,
Where are you? I'm really interested on knowing what did you finally buy. I'm in the market to buy the Bryston 4B3 and I can't fine a place to borrow it for audition it on my room.
I have auditioned the Bryston 28B3 mono 1,000 with B&W 800 D3 in a dealer on Los Angeles, CA and they sound amazingly good, great bottom, great mid range, very clean highs, big image wide and depth, great separation of instruments, natural vocals, very resolving, great liquidity, silky toms, great extension on the symbals, just unbelievable sound, for like $80K with associated audio gear. This is beyond my budget.
I'd love to audition the 4B3 but nowhere to be found as a demo in none of the dealers in Los Angeles.