Had a Princeton Chorus for years as a practice amp. Underpowered for performance - the larger Ultra and Ultimate Chorus were loud enough but somehow didn’t sound as nice. I had a Lab Series L5 which I loved but it died and was unrepairable. That seems to be the main problem with SS amps. When they fail, they’re done. Speaking of solid state, my current practice amp is an iPad (w/ iRig and headphones).