My opinion.. We do not need anymore battery brands unless something new in science were discovered and implemented into this hobby... Crescendo brand does price their equipment very competitively but something has me concerned here- their G31 batt is $279 with FREE shipping. That means the money they receive is actually lower than any other G31 car audio AGM batt out there which raises performance questions... Most batteries are always built by the same source, just slight changes and that's it.. Same casing, same charge requirements, same cycle life practically, noticed they are using pure virgin lead like many others too, same wattage recommendations as XS.. but their aH is higher than XS..but without the added weight of it.. That is assumed that either the wattage recommendation or specs are inflated. Simply put, your aH or reserve cannot increase without weight over another brand as battery manufacturing is all almost the same practically. XS G31s are 77lbs, same as odyssey.. oops.. Dekas and kinetiks are just under 70lbs. UPS batts and other cheaper batts require heavier weight, IE, larger aH ratings to reach the burst potential of XS, Odyssey, Stinger, Batcap, etc.. But since their batts defy battery logic.. i would say that i see no dieing need to use these when Diehard platinums are available with immediate warranty replacement. And i have a funny feeling the Diehard's, despite published specs between the two, can probably sustain higher voltage on a burp. But.. prove my thinking wrong.. i have done lots of research on batts and talked to several companies.. nothing extremely different changes from one brand to another.