I'm 6'3", 230+ pounds. I have dived with aluminum 80s and 100s, steel 72s, 80s, 95s, 100s, 119s, 120s, 130s, double steel 80s, double 95s, and double 120s. I enjoyed every dive with them. Each configuration allowed me to make the most out of a dive. I wouldn't take doubles up and down the goat trails of Palos Verdes so the smaller single tanks served me well. I couldn't have seen some of the deeper reefs and wrecks of Southern California without double 120s. They're just tools. There is no such thing as one tool for every job. Double steel 80s might seem great now but there may be a time when you want more gas or lighter tanks. Furthering your diving career requires an open mind.