I am getting ready to replace my car battery, I just wanted any opinions as to which battery I should go with next. I used to have the motorcraft one, it was ok then I just bought a autozone brand x and now I feel my rpms dipp very low when I put the car in reverse....it's kind of strange, the gauge meter doesn't show low but I don't want to be stuck somewhere with a dead battery, it happened to me with the Motorcracft one which lead me to buy the autozone one out of " I need a battery NOW' situation to get home. Any word on the optima battery, I looked as to which one I should go with but I can not find any info, my brother at Napa said to go with the yellow top.......is that ok? I have 1998 automatic V-6 with dual exhaust,CIA and a a BBK underdrive pulley.....so I just want a reliable battery. Thanks in advance for any input.