It seems the only difference is the price and the color of the case. Optima AGM's are seriously good starting batteries and it is good news that they are now available for considerably less money at your local Sears store. http://expeditionportal.com/forum/archive/index.php/t-14285.html Best, Steve Steve Dubnoff 1966 Willard Pilothouse www.mvnereid.com sdubnoff@circlesys.com

I wrote: > Optima AGM's are seriously good starting batteries .... What I meant to say was "Odyssey AGM's." My experience with Optimas is rather mixed. Steve Steve Dubnoff 1966 Willard Pilothouse www.mvnereid.com sdubnoff@circlesys.com