All of the SLA 12V batteries are pretty much the same. about 80% of them come from one factory and get a different label on them as they pass through the factory.. almost all of the rest just get a different cover (white vs black). The issue you get into is truthful AH ratings when buying cheap, otherwise they are all the same. What I mean is you may buy a $10 9ah on ebay and have it be a 7ah with a 9ah sticker.. but with interstate you know you are getting the right battery. Otherwise the "its better than vexilar" is just sales pitch. Bet you anything interstate and vexilar 12v 9ah are the exact same battery with a different cover/label on it.
