i manage a battery store thats been in bussiness for almost 50 yrs ran by the same family and i've come to this conclusion..........some battery brands are better suited for the north some for the south.
we sell batterys built by east penn.i have a friend that runs a shop here,moved from chicago almost 10 years ago where he ran a pretty good sized repair shop,he didnt have any luck with east penn batterys up there but they work great down here.so people are going to have differnt opinions about differnt brands.
i sell a 65 series battery with 850 cca for 59.95 that in this region will smoke any interstate,exide,autozone(johnson controls-made in mexico)thats sold in this region.
what ever brand you buy a good add on is a battery tender for help in cold weather.