For what it's worth, we have a $230 EdgeStar compressor fridge. We chose it because of the price and the quite large separate freezer as well as the fact that it maxes out at 80 watts and draws 1 amp. The compressor only runs about 5 minutes every hour if you don't keep opening the doors. It weighs 59 lbs. We run it off an inverter which gets power from a 100 AH AGM battery that charges while driving so the battery is always fully charged when we get somewhere even after running the fridge all day.
The freezer holds a 24 inch pizza, 4 lbs of frozen shrimp, 8 servings of frozen salmon, 8 frozen dinners and 6 frozen burritos with room to spare. I realize that this is a household refrigerator used predominantly in dorms and may not stand up to rigorous duty but it's traveled about 3000 miles so far without a hiccup. After plugging it in it gets down to correct temps in about 40 minutes (0 degrees freezer and 35 degrees fridge).


