DieHard WeatherHandler 30023 585cca car battery vs Les Schwab Xtreme Power X1 cold 800/1000?

I am trying to find a comparison between these two batteries for my wifes car but can't find one. I have both batteries, both in good shape, but we live far out in the country and I need to make sure she has the most dependable one. I am looking for opinions...which of the two is the BEST battery. thanks