If you want to set up a test we can update it in this thread and I'll do one with mine since the Pelican 35 is closest in size to the Yeti 45.I have a 35-quart Pelican and my father-in-law has the 45-quart Yeti. The capacity of the 35-quart Pelican is actually more than the 45-quart Yeti. This is probably about the closest comparison per this chart:
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If someone is truly interested in this, I could probably run a similar test.