To summarize:
Sears DieHard Platinum (made by Enersys): $210, Gray, 4 year warranty (no pro rata), 100-month prorating
Batteries Plus X2 Power (made by Northstar): $235, Gray/Blue top, 5 year warranty (no pro rata), Brass posts instead of classic lead posts
Odyssey (made by Enersys): $284...