When I first got the 10-2 Series 2 cabinet out of the box, and mounted the head, I was dumbfounded. I knew the dimensions, from the website, but wasn't prepared for the tinyness.
I had/have a very small setup before, either the Quilter 800 or the Mesa D-350 paired with an Acme B-1, but the Combo is smaller. When I plugged in and started playing, I was floored by the big voice and the tone. It seems to defy the laws of speaker design physics.
Most other Genzler owners on this thread have the big guns- M800, 410-3, 15-3 and the 12-3s, as well as the bigger Nu Classics, but probably don't have the 10-2s, and don't have experience with them. They are remarkable.
Obviously the 10-2 won't compete with the big cabs past a certain point, but the 10-2 combo could easily be the best small gig amp available. The combo has impressed me every time I've played a show with it.