I also went with the 10" over the 12" because in my reasoning a 10 is better for music
Thats hard to argue, its faster so that makes sence, Ive always prefeered 10's myself.
I heard the Velodyne DLS-3750 last week at a friends house running with a pr of maggie's mmg's kinda a cool unit becuase it has a remote control. Im not sure what the cost difference or power rating is but it was outstanding for hard rock music. Im running a pr of HSU VT2's right now and I think those are 10's also with a pr of old maggies 1.5's