One of the first interior appliance we bought recently is a proper compressor fridge. After years of ice- and 12v-coolers we finally got the right stuff. Coolers work ok for short trips, but anything longer than a weekend and you are in trouble or even worth you get some health issues with dewed food. It’s just so good to go to your fridge at any time of your trip and have properly cooled food and drinks and not soaking wet or half cold stuff.
Yes, it’s relatively expensive, but this is something that hopefully will work well for a long time and still can be used in the next few campers as well.
After reading reviews up and down and actually talking to people with different compressor fridges, we decided to go with a Engel MT35. Main reason was the outstanding quality of workmanship and the unique Engel Swing Motor. The patented Swing Motor, developed and manufactured in Japan (fits very well to a Delica :), is an electro-dynamic reciprocating device that connects directly to the piston of the compressor. You can read more about the technical details on their website. In short it should hold up pretty strong any long washboard roads and heavy mobile usage.
Downside of a proper fridge is the additional weight and the bigger size, but from our experience so far it is totally worth it.