We also have the 50 qt ARB and love it. seems to be a really good size for the JK and is very good on power consumption. We originally wanted a dual zone, but the JK is limited on space and we truly have not missed the freezer. We keep the fridge on the cold side, and if you drop a ziplock back full of ice cubes down the very bottom it will stay frozen and usable for drinks even in close to 100 degree days. I like their app so we can keep tabs on it from the front seat on the tablet, but really we never use it as its more of a set and forget once you get your temperature dialed in. We do have a 100 ah lithium house battery that the fridge runs off, and that will keep it running for a week in the cooler months, and at least 4 days in the summer before having to top off the battery. Since we move way more often than that on trips we no longer bring our portable solar panels as they never get used. this fridge stays on 24/7 365
We do have a Engel 30 quart drawer fridge in our other Jeep and that works super good also, but a different beast and mentality of use. it is low and compact and lives in a cabinet with a drawer alongside. it does use a bit more power than the ARB as you lose more cold air when opening the drawer and it only has an analog thermostat dial like the old house fridges, so it needs to be adjusted if you travel through different climates. We use that Jeep as a daily driver and for short off road trips, so it works super good for carrying lunches, bringing home groceries on hot days etc, not the best for long term use in my opinion though unless you need super compact and like to be able to pull a drawer out for easy access. We turn this fridge on when needed (chills fast).