Hey, so I know that there are a lot of tank threads on SB, but I haven’t seen any that are for quite the same circumstances that I have. I am looking at getting my first tank even though I am a very new diver (about six dives). The biggest reason that I am doing this is because there is nowhere near where I live to rent tanks from, but I might be able to get a local fire department to fill them for me if I ask nicely. My brother is a certified diver and has been diving longer than me. He is likely to be the person that I dive with more often, and he dives an al80. I can’t decide whether or not to go with the same tank he has or go with a steel tank that will give me similar dive times as him. I have been looking at both, but never having bought a tank before I don’t know which style lasts longer and which will work better in this situation. We dive cold, fresh water for the most part with some hot springs mixed in at times.