we use both 12v. Engel MR040 Eclipse 40qt fridg\freez & roto-molded coolers. IMO we "the wife & I" feel a good 12v. fridg\freez has it place: cooling perishables has no worries of wet soggy items with a 12v. fridge\freez. We bought sealable small tubs that can be stacked for space saving room along with condiments & vegetables can be stored at a normal household refriderator temp's.
Now the ice coolers IMO their isn't anything better than iced down drinks: beer, soda & other beverages along with whole or half melons: watermelon & cantaloupe. We own a few roto-molded coolers in various size's: K2 Summit 70qt with removable divider, Canyon 22qt & a Pelican Elite 30qt. They both 12v. fridg\freez & roto-molded coolers have their down falls as well as their assets.