I loved my DMC's. They sound absolutely wicked. The only thing is, not a very good trail pipe.
I actually traded mine for FMF's recently because I needed the cash, and because of the fact I ride quite a bit of local trails.
The bottom end completely sucked on the 916's, but once it hit the mid-upper mid, it pulled like a freight train. It just wanted to rev to the moon and keep on pullin' haha. Such an awesome feeling.