Can't stay logged on very long tonight but I will go out on a limb and say classical and acoustic jazz is where the Emerald XL's excel. I listen to alot of violin and piano sonata's, and classic era jazz. Piano will need a little help from the Force XL however.
A couple of things I have noticed is how real acoustically recorded cymbals and snares sound (jazz). Once again piano is unbelievable. Violins are well represented, Cello's appreciate the Force also.
DR