Engel makes a nice unit. I would also check Isotherm. I have used a number of their DC or AC/DC compressor units with great success.
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I have two old Norcold chest type 12 volt refrigerators with the swing motor compressors, both over 30 years old. One lives in the trunk of my car full time. Both work as well as the day I got them. So, my experience with the swing motor compressors used in the Engel unit is very favorable.
The nice thing about doing the chest/slideout option vs the traditional RV style fridge is that when it quits, you just pop a new one onto the slide vs trying to find/accomodate the proper fit, etc. Also, horizontal vs vertical keeps the cool in.
Lots of people just keep these in their daily drivers running.