The Custom and the DH are both traditional camber boards, right? What's up with your Custom, just felt like dishing out for a new deck? If anything I wouldn't get another pos-camber board if I had one already. Go for a all-mountain/ pow board, or a reversed camber.
De-tune and jib the heck out of the Custom.
If it ain't broke, don't fix it [yet]. Go demo a rev-cam board, before you deciding if you must get a new board.