I know this has been discussed before. I am looking for a bigger fuel tank (not that I need one) for under the bed. I have thought about Titan fuel tanks 55 gallon. But now I see that Aero has this new 70 gallon replacement tank. Titan has a lifetime warranty and Aero has 3 years. I believe Aero is cheaper, but Titan is made of hardened plastic stronger than stock. They both have good points and bad points. Just looking for some input and advice. I am a long way from being out of warranty. Thanks.