More info does not translate into better quality. Milwaukee has good customer service and I still don't think they're worth what they're charging. But to answer your question about dual vs single stage; a single stage reg reduces the gas pressure in one stage, whereas dual stage regs reduce the pressure in two stages (it basically has two single stages in one). Dual is more accurate than the single and less likely (or not at all) to fluctuate over time. When the supply pressure decreases from the cylinder the dual stage will still deliver a steady supply. Meaning you won’t asphyxiate your fish. That said I have two single stage regs, a micromatic and a cornelius, and I've never witnessed an EOTD either.Alright, how would one know if it is a single or dual Stage regulator?
What is the difference?
I am leaning more toward the Azoo just because they give more info on the product. The Milwaukee gives very little to none.