I'm looking to get a bp/w setup. I noticed that the stainless steel backplate from Dive Rite is 189 dollars while the SS backplate from DGX is 100 dollars. Same goes with the tank adaptors where the adaptor from DGX is 30 dollars while the one from Dive Rite is like 60 dollars. Is there any difference in between the gears from DGX and Dive Rite?