I run a Zoom B9.1ut for my multi effects, preamp and DI capabilities. The stereo XLR outs are a very nice feature, as is the amp and cab modeling features. I change my sound a great deal from one song to the next, from a classic B15 to v-synths, etc., and sending direct out of it as opposed to my head or micing my cab gets the best result. This way I'm getting the pure sound from the preamp and modeling, not something colored my my amp head. And I also get the full range of sound from the synths, uncolored by my cabinets. Usually after the first set, I know who the bass players are in the audience, because they come up and ask about my Zoom. I use my amp silly for.monitoring, and keep the Eq relatively flat, making minor adjustments for the room. I also have monitor mix support that is very good, so that helps me get a pretty good bead in what is happening FOH vs. what my amp sounds like.