mmadiver
Contributor
my money no object deco reg is a Poseidon Xstream Duration MK3. Super small, integrated OPV if you put an inline shutoff on your deco regs, really simple, and a lot less violent of a gas path than most first stages. Reg is reversible if you like to put your deco bottles on the right *which I do*, and the breathing is super nice. They are also very difficult to get to start freeflowing which is a common issue when on DPV's with "normal" looking second stages.
I second the Xstream for all the reasons listed, great reg.