still wondering if the Voice/Style expansion kits like the Brazil one are functional in the 750/950....

the "Latin" styles in those demos are only a teeny step up from the last gen boards. they seem to mix very typical Yamaha percussion with a few more idiomatic-sounding instruments....I would buy one of these boards if I knew I'd be able to expand the percussion voices (and styles)...sure wish Yamaha was clearer on this.