I have tankless, and I'm getting it replaced with a conventional....and mine is a 2017.
Others love their tankless.
I know, that's plenty vague, but I prefer dependable and ending hot water to undependable and occasionally unending hot water. All I need hot water for in an RV is to shower (I could heat water in microwave to wash dishes if necessary, just two of us and we use chinette stuff mostly), so 10/12 gallon conventional that is dependable is all I need.
"Next to prayer, fishing is the most personal relationship of man"Calvin Coolidge
"American by Birth, Southern by the Grace of God"Lewis Grizzard
2016 GMC Denali 3500Dually--2017 CC 36CKTS