Yes. A very good read. Thanks!
He didn't mention the Duracell AGM battery. If I had to guess, I'd think it's probably a re-badge of one of the batteries that he already covered.
It's not one of the lightweight batteries, but it is significantly lighter than the Optima yellow top that it replaced. (That thing was like an anvil.)
In any event... the Duracell has lasted two years, with my irregular driving habits, and is still going strong. This article provides some good information, going forward.