We have had a Coleman cooler in the past and I am much happier with this unit. Love the doomed lid on this cooler, it adds a lot more space. Cools well and runs quietly. Have not tried it on the heat setting yet so am not sure how well that works. Am able to keep items from the grocery store cool even on hot days with multiple stops and we live 45 minutes from where we grocery shop. One suggestion is to make sure you plug it in and let it cool before you put items in it - it seems to work more effectively that way.