I wonder if the op made a decision?
Slightly back on topic. Today I saw my first 40 cf pony on a dive boat. It was obvious among the few other 13 and 19's.
Still haven't seen one used though...it stayed on the boat.
Haven't made up my mind completely yet. I am leaning towards 40cf aluminum and then will later use it as a deco bottle. I am very interested in starting tech diving in the next year or so.
