I've been on the fence for a while wanting the ARB but will most likely buy the Edgestar due to half the cost. The biggest con for me having a refrigerator is the weight. So far we're getting by OK with the 5-day Coleman Xtreme cooler. We've never had any issues with soggy food because we don't use ice. We freeze or semi-freeze some drinking water, gatorade, milk etc along with a couple of ice-packs. We try to eat the lunch meats, eggs and most of the milk etc by the first or 2nd day.
However I just came across a 12v Coleman PowerChill cooler (not a fridge) for sale by one of the members here who upgraded to an Edgestar. I was skeptical at first so I did some research and turns out they're very popular with the truckers. It definitely has its limitations but for the price I had to try it. It's 40qts (perfect size for 2 adults and a kid IMHO), weighs about 15lbs, not much more than our 36qt Xtreme. So far I've only tried it in my garage and surprisingly it actually does cool - especially with our way of using a cooler (pre-chilling) it should work great. It can only cool the inside to 35-40degs of whatever the outside air is, therefore maintaining proper outside temps (using a/c in the warm months) is key. In an SUV this shouldn't be an issue, for e.g. if the interior temp of the car is 75F the inside temp of the cooler would be approx 35F. The other drawback is that it draws approx 5A constantly so you can't leave it running with the engine off for a long time. I have a single battery (though a big one) and I don't intend to run it for more than an hr (like when we stop for lunch) with the car off. At night it'll be unplugged relying on the insulation to keep things cold.