Summary: I've been a Yamaha user for a number of years. Started with S90, then the S90ES. Bought this because of the virtually same features, minus the weight. Features the fabulous Motif soundbank (though I'm still using my Roland JV-880 for power horn section- why can't anyone else get this right?). The 64-voice polyphony is limiting- I wish I could set up a "big" sequence and play full-fisted piano with it without worrying about parts/notes disappearing.
Pros: Easy To Set Up, Easy To Use, Lightweight
Cons: 64-voice Polyphony, Manual Not Step-by-step, Volume Unassignable
Summary: Lifelong non-professional guitarist but I wanted to learn piano/keyboard. For me this was the best bang(sound wise) for the buck. Realistic sound when paired with HS80M studio speakers. While there are many good basic electric pianos out there, I knew I would eventually want all the bells and whistles that comes with the MOX8. There is much to experiment with on this machine. Seems well constructed and thought out design-wise.
Summary: All in all, a good keyboard. Sounds are varied and realistic for the most part. Would have liked to have had sliders to more easily emulate drawbars. Also, has no one from Yamaha ever played on a stage? It is IMPOSSIBLE to read the markings on the keyboard in typical bar or stage light conditions. Would gladly have paid a little more for backlit controls. Light weight is a very definite plus.
Pros: Portable, Realistic Sound, Responsive / Good Action
Summary: I am going to make this straight to the point: Good: Over 1000 Great sounds, decent sound quality, easy to use sequencer(s) (linear and pattern based), good musical Ideas (128 X 2 Bank Performance presets). Plays well, with Sonar and Cubase, supports 64 and 32 bit computers systems. Bad: 64 note polyphony (are you kidding me?) 128 on MX and a board that cost twice as much has ½ ?
Pros: Easy to Use, Portable, Pre-programmed music, Realistic Sound, Responsive / Good Action
Cons: External Power Adaptor, Plastic Body, Polyphony