Kudos on a new tank with a 50 gallon capacity. That's 50 gallons of water you could use if a water emergency occurs. As for tankless they require maintenance and no supply should the worst happen. What is disturbing to me is water heaters at one time lasted much, much longer. Now the engineers have designed them so well that a tank with a 6 year warranty will die at 73 months. Yes, they have become ridiculously expensive. What ever happened to manufacturer's warranties?