So far as I can tell the RV choices are similar enough. It's when one starts to look at marine appliances -- where reliability is of a higher order -- that the choices become more interesting.
Mine has a lot of years though with little use so it will remain for some years to come. Were I wishing to establish what marine range might be better (size, connections, etc) I'd be inhabiting some of the sail and power marine forums.
For that I might ask on this forum some who have or have had cruisers of either type. JamuJoe is one such IIRC as is pbearsailor. I'm sure there are others.
Used ranges become available on occasion as there are those who remove them to use that space otherwise. There are salvage yards and here one wants to know in advance dimensions, etc that apply.
1990 35' Silver Streak Sterling
; 9k GVWR.
2004 DODGE Cummins 305/555; 6-manual; 9k GVWR.
Hensley Arrow. 10-cpm solo, 18-cpm towing
Sold: Silver Streak Model 3411