I use all of the above mentioned (tools for the job)
I realise I possibly carry quite a bit more than the OP has suggested, but my thoughts are:
For solo carrying my camera kit I tend to use peli case as it is quick to decant and repack. I no longer attach anything to the handle as I'm a little brutal with my kit and have managed to rip a handle off before now. It is great for walking, climbing and crawling with, but can be a pain getting wedged in rift passage. As mentioned before you do need to be careful of catching anything in the o-ring when repacking.
The inglesport version, I use their clear box to put strobes in for really wet locations.
For kit carry they aren't as robust as peli, and are somewhat more rigid, so I have cracked one chucking it ahead of me. They are very good in shallow sumps.
Daren drums are more of a faff getting kit in and out of, but do go nicely in to tackle bags. I use them quite a bit when I've got a big 10hr+ trip and can split the load between the team. You have to just be careful people don't lean against the side of the drum in wet crawls as it can break the seal with the lid. Again I was very surprised to find in Croatia this year how well they faired in shallow sumps.
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