I am using U.S. Divers "tin" regs I bought new in 1983. Durable, and with wide exhaust tee to get those bubbles away from the face. But excess baggage and inadequate manufacturer's viewfinders have forced me to look for something a little "newer."
Apollo have a good first stage, the bio-regulator? very light. But their second stage, despite appearing small, is deeper from mouth piece to purge valve not letting my eye close enough to the viewfinder. And a tee too small to move the bubbles away. I can't image any diver, let alone a photographer, enjoying bubbles in their face. What are manufacturers thinking??!!
Anyway, what are others using/recommend??
Thanks for any advice
Mary