Once you go SET most do not go back to push pull amps. That being said it really depends on the music you listen too. If your a rocker or techno dude stay away from the 300B based amps [ Airtight being the exception] IMO. Far away. Pointing out that some SETs like 300 B based are not up to snuff in the bass department. Now 845,805 or 211 based SETs can rock with the best of them.
So if your a midrange based type than the 300B will melt ya. If your a rocker than 845 might be for you. For me the most important area of reproduction is the top end. Bright, over detailed, sibilant, thin NOT my thing. What captures my soul is that naturally sweet, airy and still accurate top. The cymbals just float after that metallic hit and the decay is intoxicating.
Actually one of the most dynamic and lifelike systems I've experienced was Klipsh [K horns] and Losech & Weisner 8W SETs. mind boggling actually. Big Band was awesome. The horns had bite the bass kicked serious arse. Imaging their only weakness IMO. Go listen to a similar system oh bring a jock strap, cause your balls will hit the floor.
charles