We replaced the tank type with a tankless on our last motorhome. While it worked ok, will would not spend the money again. This time I upgraded the tank type with an external mixing valve and higher temp thermostats. Now we have plenty of hot water, a very simple water heater and much smaller out of pocket cost.
38ft 2008 Damon Daybreak 3575 (forward kitchen)on Ford 22,000lb chasis, 242" WB.