It seems like a nice little "4 voice synth" type toy with four nice little screens. The looper will be new territory for me as well. Nice sampler plate of FX. It'll work out well with my modular synth rig that I run the bass through. Got it pretty well-purchased, NIB from a Line 6 dealer (gotta watch that kind of stuff .. warranty policies need to be read thoroughly before getting new gear online!). I'm planning on patching the two control pedal jacks to some control voltage abilities the modular synth has to provide CV control over whatever functions those two ports provide in various FX models. I constantly read complaints from people about digital modelling gear that say stuff like "it doesn't sound just like my original effectomatic swirliygigger". Wth is wrong with some people's children? To me, I don't care if it doesn't sound EXACTLY like a 1976 MXR Phase 90 (or whatever). All that matters is if it provides useful sounds and useful features. The same goes for digitally modeled amplifiers. "It doesn't sound like my 1975 Marshall Mexi" ... nooo ?? Really? Lemme see here .... one is made of iron, copper wirings, vaccum tubes, and the other is made of silicon and endless pages of digital instructions .... um .. YA THINK??? Again, whether or not it sounds just like some Ampleg SBT or not is moot .... does it sound useful? Yea? Then use it! I'm hoping the M13 will provide a lot of ambient/spacey stuff ... I'll know in about 10 hours.