As a designer I can appreciate how hard it is to make a design this simple and (Tobin is going to hate this) elegant.
I also have a DSS single tank rig (and a $50 Blue Reef SS plate that is working great for doubles). I don't have one yet, but the VDH universal single tank back plate looks even more simple, elegant and streamlined. And way less expensive. It's no good if you need one bp that will handle singles and doubles. But, if you need something just for single tank...
Store - Vintage Double Hose
I have a VDH plate on my Christmas list. If Santa doesn't bring me one, I'll be ordering one shortly thereafter.