I've got an older GK 200MB, the precursor to the current 150E and 150S models. While I'm sure it's fine for jazz, it doesn't seem to be cutting it for the country/blugrass/rockabilly project I have going on. It seems to have too much focus in the mids, which competes with the mids of the acoustic guitars, mandolins, and volins of the group, and just gets lost. There's also not enough boom in the bottom for my tastes. As an experiment, I plugged into a Yorkville powered monitor that's hanging around, a "kickback" style unit with a 12", a piezo, and greater cabinet volume, which sounded much better. (BTW, I'm using a BassMax pu & pre). So what other 1x12" combos have folks used with any success? The SWR Workingman's 12 looks like the most attractive alternative right now. This will be mainly for rehearsal and small gigs; my big rig will cover larger rooms, and my budget won't tolerate an AI or similar product.