JC,
I have both boards also. The Tyros is a better board in all aspects. Even the optional speakers are good enough for a small room. I am selling my 2100 for $950 is you are interested. Otherwise, check out Alto Music in Middletown, NY. I got my Tyros there for $2499.
Tim
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Tim Schaeffer
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YAMAHA CVP-509 / Korg Pa300