my two cents.
Diehard is awesome due to the fact that as a sears product, you get the fact that if you need to do anything relating to its warranty, or if you have a problem, you will never be too far from a sears in the USA.
Personaly, i would go with a motorcraft battery. we had one last 1997-2005 in a 1997 escort before it went mid winter in the driveway. I forget who makes motorcraft, or who made it back then...but they knew how to make a battery.