Getting an Interstate is good because they have a lot of dealers so you should be able to find one anywhere. I used to use Sears batteries for that reason but they got expensive and now there are not so many Sears anymore. While many brands are made in the same factory they are not all made to the same spec. Some are made with better parts than others and some are made with more (thinner) plates to increase capacity but are more prone to aging from cycling and vibration. While these factors affect the life, Beerman is correct, how you treat it will mean more. Deep cycling, wide temperature ranges, being chronically undercharged or overcharged, too many starting cycles, leaky diode bridges allowing AC into the battery, no hold down hardware, overstressing the terminals, all this degrades the battery. I can say form experience I have had good service from Interstate and it is a popular brand, at least here in the Northeast.