I have been using two modeling amps. The Roland Micro Cube and the Cube 20X. I know......digital; not strictly SS, but witness this following performance using a Cube 20X:
I was wondering if I'd bought the wrong amp, until I heard the above. It turns out he uses it live through two powered speakers and is quite pleased with the results for both live and recorded work. So, I'm keeping mine and yes, I have found some great tones with it. As stated in a previous post, you just have to spend plenty of time tweaking and listening. The only drawback with these Cubes, and it's a minor one, is that just minor adjustments in the gain, volume and E.Q section completely changes your tone. Once I got around that issue, I started to really appreciate this new "age" of modeling amps. They should only get better in future models.