I purchased a coleman extreme sometime back and have been very pleased with it's ability to keep ice. I had it and my sons Yeti this weekend and I can say I'm not impressed with the yeti. It didn't keep the ice any better than the extreme did with the same use. The Yeti is much larger and heaver to get the same inside capacity, and is at least three times the cost.
I didn't take the yeti this weekend with the intentions of a comparison test, but I did think I would be able to keep ice longer, and it didn't happen. Just goes to show you what good marketing can do. You can sell ice to an Eskimo. In my sons defence, he didn't buy the yeti, it was a gift from the inlaws.