Hey, the original battery in my 95.5 S6 seems to be whining, perhaps on its way to toes up. If that turns out to be the case, and not my 6 year old leaving a dome light on, what does the collective wisdom of the list think of Interstate batteries? In particular, their MT-41 http://makeashorterlink.com/?K564160C3? TIA, -Ian Duff.