The PL HP is a great amp, I will say stick with the EL34s, I Believe the amp is optimized for them and sound best with them, I tried KT 120s and went back to EL 34s, the PL does it all and very closely compares to the Crimson 275 but the the 275 just had a level of realism that is undeniable. Even my wife noticed it and she is not an audiophile. I can’t comment on the Schmitt Freya, my preference is tube preamps and my PL Preamp is a great match. On another note concerning your Forte IIIs don’t use the factory jumpers bi-wire them or upgrade your jumpers, I’ve bi-wired my Cornwall’s, it has a profound effect on performance.