Squeak,
I've played both. You are very excited about the MM6 but let me clear something. Many of the styles in the MM6 are bass and drum only. There are many with some other tracks as well, but you can't add or change any of these styles
On the PSRS500, all the styles are orchestrated tracks and you can load any other 1 style you wish into the internal memory. Also, although the MM6 can be used as an arranger, there are no intro's, no endings and many fewer functions available as in the PSRS500. I've not spent alot of time with the MM6, just at the NAMM show, but I was expecting more orchestrated tracks then I found during my quick trial run.


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George Kaye
Kaye's Music Scene
Reseda, California
818-881-5566
www.kayesmusicscene.com