I just put in the Red Top Optima's. They work well, 7 cold starts over 3 days with temps at 15-20 degrees with no charge or drive time with the headlights on and blower on high, driving lights on, full heater grid cycle, everything was on LOL. Just moved it out of the drive and back in over the holidays. I turned on everything I could find to see if it would start. The last start was kinda slow, but they passed with flying colors. Go for the Optima's.