Right now I'm using them separately in the studio. Really just trying to sort thing out right now. But I'd be more then happy to discuss this topic. See the thing is I'm also fortunate enough to own a Fantom FA-76, a Triton Studio, a Karma, and a Ketron SD-1. Can't keep 'em all though - since my wife helped me purchase the Tyros from George, I gotta sell something - probably more than one keyboard. I've been going through absolute AGONY the last few weeks trying to decide what to sell and what to keep! It's probably for the best though. I can't seem to efficiently utilize everything - probably me better off with some modules. Any helpful comments are welcome. By the way, I think you guys are the greatest and I really love this message board!