Water heaters

To add to my last post I've installed gas water heaters for relatives and between them and myself I NEVER get the rated "warranty time" out of them no matter which price grade or what brand I buy. My remaining time left on my last 40 gallon tank paid over half of the price of the tankless.... (It helps that I caught the tankless on a helluva sale)
Oh I take that back. The last one I put in the mother in laws house went 7-1/2 years on a 6 year warranty tank. About the same as I usually get out of a 9 or 12 year model.
( brother in law bought that last one, not me)