Not sure if anyone mentioned this (probably), but not every amp is a great fit for the speakers you have. So 'best' really can not apply to any single piece of gear.
We sell Wilson, Sonus Faber, KEF, and others and have been Bryston dealer for years, but grew up on Classe' and Mark Levinson. When we took an older PASS 250.5 in on trade and it simply bested our brand new (but burned in) Bryston 14B3 on a pair of Sonus Faber Il Cremonese's, we became a PASS dealer. We've been pairing PASS with most Wilson's and have not found a bad combination of speakers to run with them. We also demo all speakers over $10K with a pass amp and often sell the amp too.
I typically avoid the forums as a dealer so as to not promote ourselves, but we really do like the PASS products (despite the fact our current order of gear will ship Feb 2019 :-(