There are several AGM batteries to consider as well, which were not available a few years ago. Absorbed Glass Mat batteries offer some advantages over the traditional flooded types, the main one being that they almost never leak acid even when they fail, which is a big plus on a car that surrounds the battery with all kinds of expensive electric and electronic modules such as the LR3/4. Sears sells the DieHard Advanced Gold AGM (sized 49) for a good price - usually around $170 or so - and a nice 3-year full replacement warranty. Exide recently introduced the Edge AGM in a size 49 as well, it's a bit more expensive ($220 through Amazon) but comes with an even better 4-year free replacement warranty. Food for thought.