I have a Yeti cooler. I didn't buy it, I actually won it in an online contest with the North American Fishing Club. I usually use it when I go on fishing trips where I will be keeping all of my cold food/drinks in the cooler the entire time. If I am going to a place where there will be a frig, I use a different cooler.
Yeti Pros:
It does hold ice longer than all other ecnomical coolers
It is unreal how strong this cooler is.
It is a great converstion/status piece
Yeti Cons:
$$$$$$$$$$
It is unreal how heavy this thing is, loaded or unloaded.
They do not come with wheels, this goes with how heavy they are.
Ice does make a ton of difference. If you can get the solid ice cubes, not the ones with the holes. The most important thing is to keep the lid closed as much as possible.
After owning one, I would not buy another one simply because of the weight and how hard it is to move around. They are worth the money if you need a high performance cooler.