halocline
Contributor
More air does NOT automatically mean more safety. Planning your dive and managing the gas you have is what results in more safety. I would not enjoy carrying a tank that weighs 10 extra pounds, and I have a feeling those weights are a little light. I guess if you're always on a boat and/or you're a real he-man it won't matter that much, but most of my local dives involve a decent walk. I use 72s most of the time, even though I have a faber FX100.
To me it's more fun to use the smallest tank appropriate for a given dive, not the biggest. It's nice to have a big tank (or doubles) if you need all that gas for a particular dive. If you're only getting 40 minutes out of a full HP100, either you're a big guy, diving pretty deep, or maybe could use some work on air consumption. Well, truth be told, we all could, so don't take it personally.
