This is seemingly an old thread, but I'll add my two cents.
I will never own a Yeti because it would be the first thing to get stolen. I have all different sized of coolers. The 48 quart is a handy size, but so is a 75 quart. For a week on a river a 100 quart cooler is just the ticket. There are now more imitation Yetis and knock offs all the time. I might spring for a better cooler one of these days. Space blanket, insulating material or even a wet towel make ice last a lot longer. I like the coolers with a small hatch in the lid. For a week I line the bottom of the big cooler with blocks of ice, and add several more. Large capacity is needed to hold all of that ice. Frozen water jugs can be used up as they melt.
I also,a few years ago bought a Pelican
camping cooler because I wanted something to keep ice longer and thought it would be cool (no pun intended) to get something that matched my Pelican Storm cases. That was the absolutely worst mistake I've made in buying stuff for camping. I forget exactly what size it was, but it was the size of a 100 quart with something like 4 inch side walls. So the interior wasn't anything close to what I needed. On top of that, the thing was so bulky it was a pain in the *** to move around even when it was empty. I paid a fortune for it and took a helluva beating to pay to ship it back. What I have now is way more manageable. I don't take a lot of perishables out with me, so I actually get by with two 28 quart Colemans. MUCH easier to load in the truck.
There are many interesting videos on YouTube on this topic.
[video=youtube;zu-V0ZqfYHg]https://www.youtube.com/watch?v=zu-V0ZqfYHg[/video]