I'll add that a chesty, in general, works great for your use case, especially from a dive ops perspective. I've talked a number of OC-only blue water dive ops into letting me dive my chop with my family/friends since they don't have to do anything different for me...just give me an AL80 like everyone else. All I have to do if find a shop somewhere (sometimes it's the dive op) to refill my O2 bottle every other day.Not wanting that to derail this excellent thread; by travel-oriented, I mean looking at pretty fish without "team" diving and the traditional large and heavy kit. For example, using the very lightweight Halcyon Symbios on the barrier reef as it's nicer to dive CCR than OC.
Hope you're right about the price!