I had a Norcold DE-0040. 1.7 cubic feet. It lasted about 5 years
I now have a Vitrifrigo c51is that is 3 years old.
Both had/have extra insultion and added ventilation to cooling unit and to interior.
The VF is much much quieter, and slightly more efficient, and more ergonomic. Not much more inside space, but it is better utilized.
The cooling unit was assembled nicely, and can be refilled. It has a radiator style condenser with a 120MM fan.
My Norcold failed due to low refrigerant levels and it was not refillable.
It had a passive condenser and the sawafuji compressor which would vibrate my whole Van. I expended much effort in trying to isolate fridge to reduce noise and vibration, with success, but not enough.
The VF needed no such modifications to dampen noise or vibration.
So there is my opinion having owned both brands. VF all the way.
