+1 for the Sinfonion here...yeah, it's spendy as hell, but you've got to consider what it IS. Multichannel sequencing quantizer + "theory engine" ain't gonna be cheap. F'rinstance, I've got a NDLR here, which definitely covers that "theory engine" aspect, and even though it's just a little desktop box, it was an EXPENSIVE little desktop box. You get your money's worth with the Sinfonion, tbh.