I'm 70 yrs old and have always used AC-Delco batteries exclusively for well over 50 yrs, except for a Die-Hard camper battery in a slide-in. They've served me well over the years, never have had to replace one under 5 years, have got as long as 10 years out of one. Last one I bought was a 7 yr group 78, I think around 800 CCA at a dealer for $130, but that was 3 yrs. ago. So unless I get stung on one I'll stick with them. But a lot of battery dependability depends on owner maintenance, a trickle charge every once in awhile on a seldom driven or short mileage driven vehicle sure doesn't hurt any battery brand.