Are Pass Labs amps probably the best ever you can buy ?

I think AudioFound summed this all up nicely. Sound interpretation varies from one set of ears to another. When you get to a certain level of quality it becomes a personal form of what you like and enjoy.

I love my Classe' CA M600 monoblocks. They were good enough for Abby Roads Studio. They have a few years on them but hard to beat. Its a too bad what happened with Classe'. Pass does a great job. It boils down to what sounds right in your system with your acoustics. As Salon 1 Audio mentions, certain amps sound different with different speakers. That is a vital part of the equation.