Another major reason for the 2000 over the 1000 is twice the polyphony. The 2000 has 64 voice polyphony and the 1000 has 32 voice polyphony.
The PSR2000 has a digital EQ and the 1000 does not.
The 2000 has the vocal harmonizer and the notation disply and the 1000 has no vocal harmonizer, no mic input and no notation display.
2000 has a modulation wheel and the 1000 does not.
George Kaye
Kaye's Music Scene
Reseda, California