There were a couple of threads on the forum a couple of years age in which Richard Coleman and Ozepete battled out the pro and cons of the various systems.
Ozepete manufactures systems which have both air and water cooled condensors incorporated in the one package and recommends using hold over, or as they are also called eutectic tanks
, to time shift the electricity consumption
to the daylight hours.
In actual side by side tests Pete demonstrated that electricity consumption
was not only moved to when plenty of solar
power was available, it was actually about halved by using the eutectic system because the compressor was not cycling on and off. The economic benefit of Pete's system was the big reduction in battery
discharge cycling and the extended life thereof.
In contrast Richard appeared to favor the constant cycling evaporator plate solution and the battle raged for weeks. However, for us lay folks it imparted an enormous quantity of valuable information and if you are trying to build yourself a knowledge base is well worth the read. Pete manufactures systems as "Ozefridge" and Richard installs and services boat refrigeration and they are both very knowledgeable on the subject.