Coleman Marine Ice Chest for me. Someday considering a Fridge, but the price point and power system for it just isn't feasible for me right now.
That being said, for the Cooler Crowd, instead of packing your ice chest with gobs of ice, a really functional and effective way to keep your ice chest cold is to pre-cool it: add a bit of ice to your chest before you put food in it. Close it and then once you do utilize it, poor the ice out and then layer the bottom with frozen 16oz water bottles. I am amazed at how long and how cold frozen water bottles keep the contents of the cooler. And, if need be, you can drink them as they melt (although I have had bottles of water still 1/2 to 2/3 frozen in my cooler after 5 days! If you do a layer of water bottles at the bottom, then drinks, then a layer of ice, and then your dryer cold storage foods on top, I have found the ice melts between the frozen water bottles and you don't get the soggy bottom foods as much. Also, always pre-freeze meats and pre-refridgerate foods BEFORE you put them in the ice chest if you can.
Funny story, I did this method a few weeks ago on a 5 day trip to Pismo dunes and upon day 3 when I went to pull my bag of already cracked eggs out of the cooler, they were frozen solid! I mean hard as a rock! and they went in slightly chilled. I have found this method work very effectively. It'll be a cold day in Death Valley before I give up my Coleman....