Hi Stewart, great question. Evakool released their new Elite Fridge range in April 2018, whereas their Platinum Fridge models have been around for a few years and have been very popular.
The success of the Platinum range has been largely due to Evakool's focus on ensuring these RV fridges will still perform at maximum cooling capacity even in the hottest of temperatures. The insulation thickness of their walls and doors, along with the externally mounted condenser design makes this range a popular choice for recreational vehicles heading in to hotter climates.
With the newer Elite range, Evakool have 'up-specced' the fridge offering for the RV market;
- Elite models come with install mounting frame included
- Elite models have a drawer freezer at the bottom, and freezer tub is removable
- In the 2 larger Elite models (EL145 and EL208) they come with 2 compressors allowing you to turn off either of the compressors if not required ,thereby reducing power draw. Reduced demand on each compressor when operating in higher ambient temperatures, as opposed to having  one compressor to cool both the fridge and freezer. This provides confidence that if travelling and one compressor was to fail that you can still use the other compartment. Because the cabinet is so well insulated the compartment for which the compressor has failed can still be used as an icebox / cooler.
- Like the Platinum range, the Elite range has exceptional performance in high ambient temps as both the fridge and freezer have a dedicated compressor.
...The above points are some of the main Specification differences between the two ranges. There are other features for each model (e.g. size, colour, freezer capacity, power draw etc.) which you can view on the product pages for each individual model.  Both ranges use the universally renowned Secop (Danfoss) compressor, come with a 2 year warranty and are supported by national service agent networks.
Overall, we have no hesitation in recommending Evakool Upright RV 12/24V DC Fridges (both the Platinum and Elite ranges): they are a great option designed for: Motor Homes, Caravans, Camper Trailers, Boats and other recreational vehicles...they can also be used within 'off grid' homes relying on 12 volt and solar power.