Scubapro Mark 7 / AIR 1 - Still sweet

[rockinrebel]

I'm still using this setup and it breathes better than my wifes Mark25 / S600.
Man, I wish they made 'em like the old days. If the AIR 1 ever dies is there ANYTHING out there that breathes that well?

 

[DA Aquamaster]

The D300/D350/early metal orificed D400 are about the same, just less wet as the diaphragm/exhaust valve is not on the upper side of the reg.

 

[redacted]

I like my Mk5/7/10s with the Adjustable and Balanced Adjustable 2nds and one D300. But I really do not think they breath quite as well as my wife's Mk20/S600 after I tune it well. It is hard to tell.