probably the best ever you can buy...
'Probably best' to reframe the above. : )
I'm writing this as I listen to and enjoy my system with my Pass XA30.8 in it.
Having said this, I prefer my T+A PA 3100 HV.
The T+A stands strong after being tested versus a number of amps, including the Pass XP20 and XA 30.8 pairing. Recently, I used the T+A's Pre-out and I was really, really surprised by the sound quality of my system. I'll be doing the same with the amp section once I get a proper XLR cable in system.
I encourage you to consider the T+A. Once the savings from a reduced interconnect and power cord count and isolation, are factored in, you will be ahead financially. It's also more feature laden and flexible than my Pass separates.
Let me repeat that I really like my Pass gear.
I happen to like, appreciate and enjoy the T+A to a greater degree, given my system, personal preferences, etc.