Hi Chief! Me again!
We have an Engel, caught it on sale last springtime.
It will hard freeze and run normally as well. I also can not offer comparasions, as it is the only one we have! It lives tween our seats for Sophia to ride on with us. Then when we overnight, we pull it into the "Living room" area, so that we have unobstructured egress to the seats if needed.
We since have found out, it makes a great place to set the little heater we use with shore power!
DIY HACK: On the feet, I mounted those puck like furniture sliders with rtv so we can effortlessly slide the fridge back an forth. Then we secure it in driving position tween the seats with dual bungies...
Power consumption seems to be minimal and I think we would be good for a couple days with our current solar and battery systems.
Overall, we like it. Wished it cost less, but we think we did alright.
So far, no negative comments about it.
We chose to hard wire to the 12v, and both power sources are fused.
Hope this helps!