I don't know guys... while it MAY be true that if you are on the road and a battery fails, it will be easiest if you have access to the brand/name store that you bought it from, the fact remains that as long as a you buy a well known brand of battery, there ought to be a distributor at least relatively close by, or maybe even closer, to any place where there is a wal mart or costco. For example, you don't have to have an Interstate battery replaced at the exact place you bought it from, only from an Interstate distrbutor and they are all over the place. Of course, A NAPA battery does have to be replaced at a NAPA, but they are also very prevalent.
All that being said, I personally would MUCH rather have a battery that is well built and less prone to fail so that I am NOT stranded and being forced to have it replaced under warranty in the first place!! All batteries will at some point eventually fail after they have given their months of warranty service... . the important thing in my mind is to find one that with proper maintenance gives you years of service AFTER the warranty is up!! A better made battery is certainly going to do that more easily and with more assurance of NOT leaving you stranded in the first place, then a cheaply but easily warrantied battery.
Just my . 02, but that is whay I plan to go with the Deka or Diehard Platinum when my OEMs give up the ghosts. I would even consider buying another oem battery, as they has given me good service, but oem supply contracts being what they are, there is NO way for me to tell if the current mopar replacemnt batteries are still made by the same battery manufacturer that made the one in my truck!!
Deka and Oddysey (thus the rebranded Diehard Platinum) are reknowned for the quality of their batteries. While any battery might fail prematurely due to manufacturing defects, or MUCH more likely vehicle charging system problems, it seems to me that right now people who depend on batteries for a living are VERY satisfied using the Dekas or Oddyseys or Diehard Platinums for reliable starts, both before AND after the warranty period.