don't forget if you want to get more of an organic sound from the PL amps or any amp for that matter, need to replace the coupling caps with Jensen or Jupiter copper foil caps.
Not sure about the latest EVO amps but the dialogue and prologue used SCR and clone SCR type caps. Very reliable, but not very musical sounding.
There has also been quite a swing in Chinese tube quality over the last 8-10 years. Today's tubes are quite good, and do not have that thin, bright brittle sound the earlier chinese tubes were known for.
happy listening.