So my GK MB-500 is done, and it is time for me to get a new amp head. I play a Musicman Bongo 5 with nickel strings and a Martin acoustic bass with tapes through a Bergantino CN 112. I play CCM 3-4 times a month at church, sometimes other locations. I used to like tubey and old school, but those days are behind me. These days I am looking for a relatively flat response that can take an Overdrive pedal to simulate a tube amp for a song or two per set, and can highlight the differences between my two very different basses. I do not want coloration in my tone. I'm including the TH only because others loved it. I loved it just not with my bongo. I want something small and light. No suggestions from GK as I am over them for now. I would prefer to stay with class d type amps or small A/b amps. Thanks!