PP or SET tube amp best resolution on horns?

talking to some knowledgable friends who told me that the design of a SET allows the tiniest parts of the sound to come through whereas the typology of PP cannot do that unless battery biased?????

i am looking for a pair of MONOBLOCK tube amps under 10K used that can run woofers of 110db 60-310hz. i want something more than 25W despite how sensitive speakers are, my experience is that the if too little power, notice it. i play a lot of orchestral.

I am partial toward 300B.... but open to your experience. What do you think should narrow down the audition to?