It's obvious the 2600/2400 were aimed at a younger market, with styles suitable for more contemporary songs. Personally I won't be using the garage, hip hop styles etc much either. Nevertheless if you can't appreciate playing American Pie, Tears in Heaven, Everything I Do I Do It For You, Hotel California, How Deep is Your Love, All By Myself, etc you're missing some of the best ballad styles available, period. Likwise more up tempo numbers such as Rosanna, Believe, Waterloo, YMCA, It's a Sin etc. They are all in these new styles, which even the most cursory examination will reveal.