Well, that I can agree on. Optima has leveraged themselves well in the market so they're doing something right, and with that like anything else comes the most complaints. Just like with LCD monitors here. We have 2 main manufacturers. Sales may be about 10:1 and complaints are 10:1 as well. Same complaints too. Different prices though, lol.
With AGM technology, I don't know the difference between X and Y brand. To me it's all the same chemistry and if I shorted one brand or the other, I'm going to assume the same resulting festival, but I also agree that the any claims can be assumed as intended purposes, so they should be very careful when boasting and not explaining the details and limitations so people can make assumption and blow half the car up. But to me, I'm glad the tech is available to anyone who wants it. Rseponsible or not.