I adore my Canyon 55. A ten pound block of ice will keep it cool for 6+ days as long if it stays in the shade and isn't being used as a beer cooler. The closure system is my favorite of any of the roto coolers not named Orion (for half the price too). It fits great in most boats too, if you're into that sort of thing.
Yeti's are overrated as fuck. If you can't get them on prodeal, look elsewhere.