I agree with Diki, if you're not into modern styles such as Hip Hop, Rap, and R&B (when I say R&B--I mean examples such as Alecia Keys, Brian McNight, and so on) then the MM6 will not be the board for you.

A while back Yamaha hit the low end keyboard scene with a board designed "specifically" for modern styles. It was the original DJX. Why they never carried on the legacy of the original (considering how good the sales were) is beyond me. The MM6 is another comeback for the DJX keyboard. Only this time it has a Motif based sound engine. However, the orignial had a basic (very limited) sampler, and ribbon controller too.

If you're a tradtional style player then the MM6 will not please you in the least. There are not styles such as Polka, ect on this model. It is strictly an modern style arranger with more of an urban appeal.