| Ali 80s are very trendy in some circles but 7s are more compact.
How much deco are you planning to do?
A steel 7 will do three quarters of an hour at 6m even on the breathing rates you propose and in reality, once the boredom of extended deco sets in, your breathing rate goes down and down. You end up tapping the gauge to see if it's jammed.
I have a couple of Ali stages out of test and two steel 7s I use for CCR bailout regularly. The Alis need some fancy eddy current check and I can't be bothered as they're a bitch in the water.
__________________ . nigelH Helium - Because I'm worth it . |