I have some experience owning an Optima, yet the best analysis of the battery was done by my father, who is a retired diesel/electric submarine commander (these guys know a lot about batteries). He was looking for a battery for his Infiniti Q45, which is very hard on batteries, and what he determined was that the Optimas were, well, nothing special ratings/power wise. I also don't think their warranties are any better, and my experience with the battery was that it was pretty typical. In other words, I think that this is another one of those products where all the marketers say that to be considered a really savvy person, one must own it, and that every other battery before this one was junk. Unless you want to mount it upside down, I would save the money and get a mainline battery at NTB or Sears, bolt it in, and enjoy the car. Not fumble around trying to fit in a very expensive battery which will give you no better service.
Chris Kennedy
Houston, Texas