I feel like a have a "live" band with me when I play using the psr9000 Arranger Keyboard then when I play along with Sampler of prerecordered stuff. I can control chords,ect,and can play off it better. It feels more free and creative to me. When I hook up to the computer I lose that feeling, but I can understand that others can get it that way.
I know when I see others play that have computers on stage, I wonder if they are really playing, like at Church where I go, the song is playing and the "GUY" is faking playing the paino! SAD but TRUE!