Best Speakers for Symphonic Line electronics

I have all Symphonic Line electronics (Kraft 250 amp, Reference tube preamp and Vibrato CD player.)I'm curious if anyone can recommend speakers that would be a great match. The amp is solid state 250 watts class A and speaker wire and interconnects are Bogdan audio - silver. I'm currently using Gershman Avant garde RX 20 speakers which are very good, but I'm looking for better. Room is 25' X 15'.

Thanks