If you're an auto accomp arranger style keyboard player that requires quick on the fly access to all the arranger buttons while playing I don't recommend going the module route. I used to use a Roland RA800 (module version of the G800) along with a 'Roland A33' or 'Fatar 1176' keyboard controller, and found the module impossible to optimally position for easy access of its arranger buttons when playing the keyboard controller. I think modules better suited for karaoke vocalists, and solo instrumentalists (guitarists, horn players, accordionists, etc). A 'one piece' arranger keyboard unit's the best option imo.