Quote Originally Posted by seasnake View Post
I doubled up a set of PST steel 130's ... had to rig up an eye where the crane could attach to lift me into the water ... ha ha Kidding. They actually aren't too bad, and it sure is nice having all that gas with you ...
Why bother with all that weight when you can fill an 85 to 4k and have a lightweight 120

As others have said, the decision between using steel and AL cylinders comes down to the dive. Most dives I use steel for my primary cylinders and AL for stages and/or deco bottles. For sumps I will use whatever I can get someone to help me carry to the water; that may be AL 40's or lp 45' or even lp 72's or perhaps AL 80's or lp 85's. It all depends on what is being planned and the conditions of getting to and from the water's edge.