There are five major and perhaps a dozen lesser battery
manufacturers in the world. They each provide all the standard sizes and a full range of grades of batteries and stick on either their own or someone else's label, on a battery that's built to the buyers price
line. So you can get 8 externally indentical Interstate batteries with different labels, and better or cheaper guts. Since the cases are usually made by yet another set ofmanufacturers, you may find another 8 indentical batteries from other makers!
Rolls / Surette, and one or two others are kind of "boutique" battery builders charging
premium prices for premium product. For the rest, you get what you pay for. To know what you are getting for your money
, just weight them, in the case of deep cycle, or buy the one with the best waranty for starting batteries. All batteries will last as long as you treat them right.