What I did:
Replaced RM2410 with CR140I do find this particular compressor fridge is fairly electricity hungry, so wouldn't be ideal with my single battery if I didn't have my 160w of solar or stayed 3 or more nights in the same place without hook-up or driving.
However, it gets cold fairly quickly and doesn't care if you are parked for several hours at a weird angle.
It was narrower, taller and deeper than the RM2410.
If I were doing it again I might consider a small 40 litre Engel top-loading fridge. Much more electricity and space efficient, though not quite so compatible with the upright slot left by the old fridge.
Steve.