Originally Posted by -Lightning-
Empire has a lifetime warranty, even though you can't have a tank past 20 years, it's still something to consider.
Ninja is good. I noticed they must make there tanks differently, my guess, more hands on and less machinery. The tank is bumpy I guess. You can tell when you roll it on a flat surface. Not that it matters but its probably cause they take time making them.
Either company is good, but the UL reg is amazing (can be put on an empire tank) The fill nipple doesn't poke out or scratch you.
I believe its 15 years. Correct me if im wrong