So heres a thought. The two Aquos Sirenoids have the same number of G's as well as the same print number or whatever. '2'.I think that number signifies the strongest of the Aquos Sirenoids, for instance, someone posted that they had a 400g sirenoid with a 1, 1 being the weakest with 400g, 2 being the next strongest 460g. The reason i think this might be true is i have an Aquos Sirenoid with a '5' on it, and its 630g's which might mean its the 5th highest G for Aquos (or maybe any) Sirenoid.Again 1 being the weakest and 5-whatever being the strongest in G's. ^^ Kinda hard to explain it after today but i hope its clear and hopefully possible.