Best deep cycle ?

Tplife spends 25% of his time camping in a Class A Alegro (the MountainAire burned up in Georgia, you heard it before) so take beemerphiles advice over my experience, advice, "Rock My RV" apps, etc. and stick with 20th Century lead-acid technology. When you're stuck on stupid, all the advice in the world won't get your out of your tiny PUP to experience what every tent camper knows at 6:00 AM. Seriously, if I wasn't a career science professional, I too would trust my $ on old-school throwaway technology...just something about my training keeps me plugging in my voltmeter and looking for a better way...whew! Glad I did my research - I only learned what I know from this and that "OTHER" website :)