I also agree that 2 keyboards look better than one. But 3 is too much. I did that one time but I look like a robot in a spaceship. I never use arranger in most of my gig using 2 pro synths but now I'm thinking about using it. But the problem is most good sounding arrangers are bigger and wider than some average synth. Most likely I'll use it on top of my synth. There are some features in the arranger that the synth doesn't have that I want to use. Anybody knows a mini arranger?

Scott, It will be nice if all keyboards, synths and arranger have line input or even a passthru input so we can chain them without using extra device like mixer to set up. I am using a mini line mixer actually, and it's made by Rolls. It's a little bigger than a pack of Marlboro with 3 stereo input and I just velcro it underneath one of my synth. It's pretty handy.