I dithered and waited a long time (probably 10 years) and I finally broke down and bought one of these:
Dometic Fridge/FreezerIt cools and will freeze (cools down to 0F). Good for ice cream! I use it camping, when I'm not camping, I keep it plugged in and full of beer. Since its portable, I can put the beer-filled cooler at hands-reach.
Runs on 12V, 120V and 240V if you happen to be in one of those 240V countries.
I bought it on sale, with the campingworld discount, extra warranty and free shipping it was $450 (a bit higher now, I see).
I would have bought a bigger one, but it wouldn't fit in the trunk of my car. ARB sells something similar (same compressor technology), albeit at an even higher price.
I've left it plugged in all day in Yosemite (hooked to the car battery).
I'm very happy with it. Buying was painful though
