For the folks who take coolers with them on AR outings, such as on Field Day, what cooler do you use and does the model work well? Does it retain ice for long periods of time and keep things cold? I bought a Igloo Sportsman 55 Qt. model unit and it works fantastic. A lot cheaper then the new guys on the block like Yeti, Orca and Grizzly brand models and retains ice for over 5 days in very hot Tx weather. The cooler from time to time gets filled up with Dos Equos beer and plenty of ice when having a BBQ here at the house. I like to drink my beer ice cold and the Igloo guy sure does make that happen. A little beefy at over 40 lbs empty but it sure does work. Igloo is still tough to beat.