After going from Pass XA30.8 to Octave v110 (KT120 P-P 100wpc) and back to Pass, I think that nice PP tube amps are a different and enjoyable beast. Much fuller sound, denser soundstage, more immersive on the Octave. VERY detail-oriented, precise, more sparse soundstage with the Pass. I ultimately enjoyed listening to the Octave more than the Pass, but both are extremely good at what they do.
I had to return the Octave due to a tube biasing issue, but I went for an alternative PP tube amp that seemed like a cool value proposition: Wavestream Kinetics Boxter (6550/KT88 100wpc) from The Music Room. No information about it anywhere, but designer is Scott Frankland (of MFA, Wells Audio fame).