Hi Guys, New to this forum and just happened upon it when searching for these coolers. I just happened upon these at my local walmart here in Colorado on March 14. That night I bought the 26 quart and, I liked it so much after checking it out at home, I went back the next day and I bought the 52. I filled both with ice when I purchased them. Although I don't have pics to share, I can share my experience with both. Obviously it is winter here, but I have a heated garage and have kept both in there since I bought them. Constant temperature of 69 degrees F. The 26 Qt kept ice for 5 days, and I still have ice from the original load in the 52 qt (I filled it at approximately 5pm on Tuesday, March 15th), so I'm at 11 days on the 52 QT with some ice (I have opened the cooler at least 2x per day, some days more. I will say that we had a 70 degree day here full sunshine last week and I did set the 52 in my driveway for the entire day in the sunshine as well.
I'm definitely sold on these coolers for now. I don't have a YETI or any other high end cooler and didn't really want to spend the money but when I just happened on these, I am very glad I bought these 2. I'm really excited to test when I can leave in the full sunshine and high temperatures here in the next month or so. I will say, though, that I will primarily be using these coolers in Sept for week long hunting trips where temps are consistent with the 69-70 degrees the coolers are seeing right now. Absolutely no question the 52 QT will last entire trip. I highly recommend.