There are also lightweight options like Braille batteries that can cut down a healthy amount of weight, while sacrificing a small amount of cca and charge capacity.

After being stranded twice over the weekend I prefer not to sacrifice CCA.

IMHO go for a AGM battery with a great warranty. It's more of a hassle to go through a niche AGM battery specifically designed for something like car audio in the event of a warranty issue. I've had Sears Diehard Platinums in all my car audio builds and have seen a SIGNIFICANT, tangible, non-biased improvement in every car I've put them in over wet cell batteries. I have seen a few optima batteries die or have problems at car meets.