Spalding is right...it should be "the keyboard you are most comfortable with"
We all have different needs, and different ears, and we also vary in our approach to playing "live".
An arranger is a big investment for most of us, so it is best to "try before you buy".
Sounding "impressive on stage" also depends heavily on your choice of sound system.
Ian
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.