I suspect we are all prejudiced by our personal experiences regarding most things. Me? I have always preferred to go down the road on DC and have done so for most of my 30+ years of owning motor homes. Our unit prior to owning our PC, we got over six years service on our set of coach batteries and always ran down the merry lanes on DC. I replaced the coach battery after six years just because it was original and figured it was time. The coach and chassis were never taken back to any dealer for service or problems after I drove it off the sales lot after buying it new. So, I would conclude that for me the DC worked just fine. Plus, on propane you always have to remember to turn of the refrig when gassing up. Boom is a bad word.
Paul