Some nice suggestions above. I would add Llano Design Trinity hybrid amp to the list. It offers extra flexibility because you can insert a wide variety of small signal tubes (takes 2) and change the overall "flavor" (and gain) of the amp significantly. Its output stage is MOSFET, which I tend to prefer over bipolars. Llano has an in-home trial offer (you order direct from the factory). I haven't heard the newer Counterpoint (or Aria) amps, but I owned an earlier Counterpoint and was always pleased with the hybrid sound. Really does give some of the liquidity and "presence" of tubes but with SS control of the speakers. Presently I own two Llano Trinity amps, used to actively biamp Maggie MG3.6's. I use the 300W amp with 12AT7 tubes for the bass, and the 200W with 12AX7 or 5751 tubes for the mids/highs. This give me the "tuning" of the amps as I mentioned above. Still, I'd love to try a Lamm someday.....