I have a Rheem model A26299 34,000 BTU gas water heater that died on me. It's about 22 years old. I want to get another one. Is there one with a 12 year warranty, similar to the one I have? I found a Kenmore 50 gal tall nat. gas hot water heater (33157) with a 12 year warranty. What's the best water heater to buy? I want one that will last another 22years.