Optima Batteries worth the $$$

I currently have a red Optima battery in my Dart right now. The battery is in the trunk and of course it has a long cable running to the engine compartment. The optima seems to not have the cranking power that my old Sears Die Hard had. Of course I bought the biggest baddest Die Hard I could find and I kept it (like the Optima) on a battery maintainer at all times. My Die Hard lasted 8 years and still didn't have any problems when I changed it due to age. I guess we'll see with the Optima

Where did you get your blower manifold superchargeddrt???