Thank you everybody for all your replies. Brad, you nailed it! When I say I don't want the synth sounds, I'm referring to the electronic sounds. All that spaceship sounds. What I really want I guess is to find something that costs about the same as the MZ-X500, but without the Martian music and instead uses the money to provide a higher quality of the remaining stuff. I'd try to be more specific about the features I want but to be honest, I have no idea what many of the words mean. Like what the hell is a sequencer and do I need it? And what do pads do? Are 16 enough? Guess I'll have to learn as I go along. Anyway, that's probably part of the fun of learning.
But again, thanks you guys. I know you're all busy and I appreciate that you took the time to respond.
Mahalo!