F Coleman. I have both Igloo and a Coleman. The Igloo keeps frozen foods frozen for a week with 2 ice packs in there and cycling on and off during my 10. Coleman will eventually freeze my drinks but the plugs and such are complete junk. They refuse to stand behind their product when it breaks. They also don't like it when they ask for your user opinion and it's not telling them how great their product is. They get all pissy.

I don't like the Igloo lid, it's a real PITA to open even with 2 hands. It's a medium size one vs my Coleman, so half the size. I carry both with me, Coleman just chills my drinks. I put a thermometer in there once, it was at 38 degrees. Let it run long enough without being full, water will ice up. I'd go full Igloo.

Good cooler
 

If you're still looking I've used a sunbeam and never had any issues. Good solid stick on door and keeps things at a frosty temp. Not sure what model but it was one of the cheapest ones I found.