There are only a handful of major auto battery manufacturers and the majority are built by Delphi, Exide and Johnson Controls. Johnson Controls is the largest North American OEM battery manufacturer and makes batteries for Interstate, Sears, Autozone and literally hundreds of other brands. Johnson Controls also acquired Optima of Sweden more than ten years ago, which is considered one of the best (and most expensive) batteries.
Most of the time you get what you pay for and I would buy a premium battery from whichever manufacturer I chose. Besides better quality plates and construction, the premium models almost always gets a longer warranty with both better complete replacement and prorated schedules.
Steve