I'm looking at the pictures of both the 1500 and the 3000. They look exactly the same except that the display on the 1500 is not a color display. Both display lyrics and notation. The 1500 is 96 note polyphony compared to 128. Organ modeling on both. 793 voices including sweet and cool on the 1500. Sweet, Col and Mega voices on the 3000.210 styles on the 1500 vs 240 styles on the 3000. 16 track sequencer (32 tracks over usb) on both. Smart media slot on both. Direct to Internet connection on both. USB "to device" to connect USB storage devices (thumb drives, FDDs, etc.). video out on the 3000. 2 MB flash rom user storage on the 3000 (I don't know what is on the 1500 (probably 1/2) ). On the 3000 "you also get the styles from the tyros and new ones including styles targeted directly to the US worship market."
George Kaye
Kaye's Music Scene
Reseda, California