Contact this fella, Paul Brayant is on a couple R3 facebook pages and maybe even on here , he's in NZ and i think he's got a slipon package for duel exhausts including the crossover box eliminator paul@vikingexhaust.com
I guess it depends on what your personal preference is. I went TORS because I didn't like the opposite slash cut of the d&D's, they also looked smaller to me anyway. I also like the sound of the TORS personally, gives the bike a "full note" sound, and is not so loud that I'm annoyed during long rides. The D&D's are louder from what I have heard on sound bytes. Good luck