Three recommendations based upon prior (and expensive) listening experience:
1) Gamut D-200 III -- really great all-around solid state amps. IMHO less solid state sounding than other SS amps I auditioned before.
2) Cary Rocket 88 -- Dude! 50 watts that will beat the gamut in terms of 'fun' sound. Bass actually felt more extended than the Gamut! Insane soundstage and very 'tooby' sound.
3) Rowland Concerto integrated. I sold all my crap and got the Rowland 'cause I was sick of the upgrade bug. Sound is like the Gamut, only more of it. Soundstaging is spot-on. Not tubey like the Rocket 88, but since I have no intervening cables and electronics between the amp and the source, I get more "there" there. My new long-term reference for Avalon speakers.
Cheers,