Russell K is the clear winner IMO, more full bodied, instrument separations, voices are more forward. Revival sounds muffled and clustered. XAV is clean but thin sounding.
I would say the little red 50's. As I have the red 50's. But I have nothing to compere them to. So this is just perfect for me. I can definitely hear how clean, and no coloration I get it now. Big thanks.
Gosh this is hard without being in the room but the Russell K sounded more organically expressive and natural than the others . The UK flag on the front baffle is a little vulgar though.