You decide: I prefer the sound of the MB200 in these videos, but I am not sure if each of these reviews used a consistent signal path. The MB110 and MB112 sound mic'ed and the MB200 sounds DI'ed. From the reviews I have read, the MB110/112 combos are voiced a bit warmer than the signature GK sound. The MB200 sounds very true to what I consider GK tone. Something to consider about expandability: The MB200 makes 140w at 8 ohms and 200w at 4 ohms. Basically you can use this amp with any unpowered bass speakers as long as you don't connect a load below 4 ohms. The MB110 is 100w into an internal 6 ohm speaker. The MB112 is 200w into an internal 4 ohm speaker. There is no output for running an external speaker, but they do have a chain out which is used to plug into a GK MBP series powered cabinet. The bad thing is you are limited pretty much to MBP cabs if you want to expand later. The good thing is you can daisy chain as many MBP cabs as you want. Note there is a MBP 112 extension speaker but not an MBP 110 extension speaker. If you think you might want to expand later, I would go with the MB112 combo. An MB112 with an MBP112 should be a very potent rig. Plenty of reviews and opinions can be found with a Google search.