Was (and still am!) in the same situation, play mostly at home now, in an apartment, so wanted something small but decent. A/B'd the Genzbenz Shuttle 3.0 10t against the Markbass mini (121). Found the Markbass packed way more punch, but kinda coloured the bass a lot, you kinda knew you were playing through a markbass. The genzbenz was very neutral sounding, very clear, and I found it nicer to play at low volume. And it is so light! No regrets so far. Heard great things about the AER, never got the chance to give one a try...