I purchased the 55 quart cooler about 2 weeks ago and used it on our vacation.  I am extremely happy with the way it performed.  I really only had to add additional ice once in 7 days.  And that was just to fill it up.  I looked at other coolers like the YETI, RTIC, Cabelas, etc... but I just couldn't justify the cost so I thought I would try the Lifetime.  So far, I am not disappointed.