BY the way, I did mean ALL the brands in my post above, of course, Roland is included, I have test the GW8L/Prelude and it falls short, and here is why.
Let me say that they have Cumbias Radio 1,2,3,4 & 5, Cumbia Traditional 1,2,3,4,5, Cumbia Romance 1,2,3,4,5, etc, etc....there is VERY little difference in tempo and perhaps SOME instrumentation, that does NOT justify the amount on EACH one of them....same with Paso Duranguenze(Northern Mexico region) 1,2,3,4,& 5, that by the way,is NOT the same or even similar to the Paso Doble (Spain).
There are several issues with correct instrumentation and musical phrasing in many of their Latino styles, is obvious that the persons that designed those styles, did not completed their research, you must be immerse or have born in that culture to know how is play that particular gender.

In the case of Roland, my guess is that they wanted quantity, not quality, that explains the number of those styles, BUT, I must admit, is the closest "attempt" to try to do it right.

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mdorantes