I have a CF 35. Its so great getting home and having leftovers you can keep, instead of tossing soggy lunch meat and mayo soup! And you can be confident the storage temp was correct. The 35 holds about the same as a 50 qt cooler ( minus ice). I usually start with a small drink cooler, and as space opens up I start putting drinks in the fridge. So I use less ice, and have cold drinks the whole weekend.
Tom