Concerning your reasearch
Concerning your reasearch into hybrid batteries, not all are created equal. Not all hybrid software operates on the same parameters. Meaning if we were discussing an older honda civic hybrid, battery replacement would be a guarantee. But on the two cars mentioned, you will probably be spending major money on the engine long before you will need a battery. Toyota used a quality battery and does not deep cycle it. Many of these vehicles will never see a new battery in their lifetime. As to the decision of buying any manufacture's luxury brand instead of the similar regular brand car, value is not the priority in the purchase decision. Luxury brands allways depreciate faster, no matter who's, and everybody knows it.