Well I guess tube pedals react much better with tube amps IMHO. I tried using my valveboy with my marshall 8040 before and didnt much like the tone, parang kulang sa dirt, grit etc.... but when I plugged it to my 6100LM, the valveboy screamed like hell, distortion, grit, tightness and thickness was defined (iba yung saturation eh, warm pa yung tone). Pero some solid state pedals also sound really great in tube amps din eh, for example yung EMMA RF-1, kinain nya ng buhay yung valveboy. hehe!!
Well siguro its a matter of compatibility din between tube/SS pedals and tube/SS amps.
Phil is right, try the pedal out first or ask people who have tried the pedal out already, mahirap gumastos tapos madidisappoint ka lang.