Only question is, which type?
I'm attracted by the plug into the car types, but I'm flummoxed as to how they actually work - do you have the darn thing running constantly, or do you cool it down and then switch it off for a while? Don't they drain the battery completely? Do you use them with cool blocks as well? What happens at night when it gets cold?
Or should we go for one of those stonking Coleman ones that keep stuff cool for up to five days? Does that assume that you aren't actually going to open it at all?
Our UK camping is mainly weekends, with the odd three-nighter. I'm a bit fed up of the cool box being mainly cool blocks, and having to remember to change them all the time. Oh, and we don't actually own one yet, as we have been borrowing my mother's.
Over to you, oh wise campers.