I absolutely love mine as well, I've used it for half a dozen shows in the last few months, and band practice at least every week. Through my two 15" I have enough push to drive the band without going through the PA for practice or for small/medium outdoor gigs that we've done..and that's with none of the gain/volume controls beyond noon! Maybe the master at 1-2 if I really wanted to overwhelm the band or carry through the theater with no PA.
The DI through the PA sounds phenomenal. Small, light, comes with a decent gig bag (although I'll be getting a rack soon for the amount of playing/moving I put it through, any gig bag would take a beating soon).
My only caveat is that it is a very smooth and warm amp, whether you go through the SS or tube pre. Maybe I havent tweaked it enough, but when I compared it to my GK amps I preferred the SM 12.0 because it made my bass sound "alive", rather than "sterile" (and up until that point I had never considered my GK amps to be "sterile"). But if you're looking for a lot of growl or punch like a led sled all SS amp right off the bat I'd warn you to not be let down immediately. The EQ is VERY versatile, I don't have any problems getting a sound I want/like, but its not a GK or mesa amp, so don't expect it to rip your face off or something right away. I could especially see this if you run old school passive basses. The tone is even up and down the fretboard, very dynamic in terms of playing level response, and it looks awesome with the bright LEDs.
I did have sound cut out on me a few weeks ago, and I couldn't diagnose the problem. Normal operating conditions, not over working it or anything. It hasn't done it since in the two band practices, home playing, and another gig at a different place, so I think it was the power supply or something. Nothing to be concerned about, but just letting you know these amps aren't infallible. If I did have a re-occuring problem I have complete faith in the Genz-Benz support staff from their posts here on TB and other member's good experiences.