We replaced the 14 yr old to small hot water tank with a tank-less large size, always have hot water now and for as long as we want it. Only issue is the length of water lines in the house still take time for the hot water to reach where it needs to go. Hubby has it set at 140. We pre run the kitchen water before turning on the dishwasher to get the water hot. And use vinegar as rinse agent.
When we moved the efficiency dishwasher in the new house took over an hour and a half, I had hubby exchange the high end crap with the old one from the other house works a lot better, shorter wash cycle.
I’m not much of a fan of tankless units, based on what I read in the past, but maybe they’ve improved. Glad you’re happy so far.
My wife is awed by the beautiful new washers and dryers - I tell her don’t be fooled, so we keep using our excellent 20 year old units. Eventually we’ll move out of state and get new ones - perhaps Trump’s people will end crap first - but that still requires the manufactures to also end this crap.