I know nothing about the BDR cones. But it is my generic understanding that the associated coupling discs (if that's what you are calling pucks) lessens the performance benefits, not increases.
Thanks for the info right now my player sits on top of my av rack. here is a link to my rack:
Having it on top I won't have any clearance issues and by the way I like my player to be visable. By the way do you happen to use the coupling disks.