Hate to say it, but East Penn/Deka seems to be the one to have-the Exides are junk, the Johnson Controls ones are leaking from EVERYWHERE-AND NO ONE WILL WARRANT THEM FOR IT! I'm very disappointed by them, the older JCs didn't leak much, & I had some upper end Interstate MegaTron Plus ones last over 10 years-but now the JC ones basically need a top end grease & battery protectant bath to stop them from corroding everything in sight (my systems are not overcharging, I've checked them all)!