I agree completely..
My BP-20 is a fantastic sounding preamp.Easily up there with some of the best I have ever owned.
Over the years,I've had 2B's, 3B NRB's,4B's.and more than a few preamps in the Bryston .4 family.
All were excellent performers in thier own right.
One of the biggest attractions for me is the fact that Bryston makes everything in-house,and has very liberal warranty.
Recently,I had Bryston Service in Vermont repair a BP-20 & a 2B LP PRO that I had picked up on the second-hand market.Both units were returned to me within 10 days,ready to go!
Not to long ago,I had another preamp from a well-respected American high-end company perform a repair,and it cost me $255.00,& took 6 weeks!
After that little adventure,I made a concerted effort to seek out my BP-20. I knew if I could secure one at a fair price,I'd be well taken care of,if the need for repairs arises..