I have not had a 3000. I went from the psr 2100 (the 3000 predecessor) to the s-900.
the eq on all 3 of these boards can be adjusted accordingly to your tastes and.... the sub volume on the z-5500 can be turned down if needed. My sub volume is rarely up over 1/4 way when indoors. Could be higher outside for louder more powerful sound.
Jim