Bang, Buck, Batteries

What gets me is they are the same size as the Interstates I took out (4 years old and toast), but they weigh *14 pounds more* (78.5), and have ~20 AH more.
I don't really mark them up much, but I sold them for $262 each, at a small profit.
Now I have to see if I can make the Magnum inverter charge them like they want, and not like the Magnum folks think AGM batteries should be charged. The manual I glanced at said "Future" for custom charging profiles.

Good old AGM...
The era of golf car batteries not having enough cajones, errrr, power, for a large inverter microwave seem to be over.

My question is this. Based on the fact that little can be done to fudge on mat thickness and plate spacing, how do these batteries differ from say the group 24-27-31 same brand and type? Or to be a bit more specific, a comparison to the Lifeline group 31 2-story? This isn't criticism, it's a curious me trying to learn. The 2-story Lifeline is 385 dollars and definitely has .115" plates, and 180 amp hours. If your puppies have .115" plates I will jump for joy.

The buck part--$300/each.

Great looking/performing battery, though.:)