Refrigeration upgrade

[Mickeyrouse]

After more years than I care to explain, I have finally decided to yank out the ancient Grunert belt-drive refrigeration system by the roots. What I’m leaning towards is an Isotherm 2017 system, because it is indicated as being suitable for reefer-freezer applications. Since our present layout is one 1.5 CF freezer compartment between two 2.5 CF reefer boxes, I’d like to stay with that because I believe anything much different would entail major cabinet surgery, and non-matching Formica replacement.
The West marine review in their catalog is not complimentary of Isotherm support or component supply. I realize that poor reviews are more generally likely to appear than good ones. Anyone have any experience in that regard?
I’d like to stay with air-cooled condensing coil. Our cruising range mostly is Texas/Gulf coast. For our needs, does anyone have other suggestions?