I have had issues with Optima too.
Check out the new Braille with carbon fiber case. I have heard stories of the heavy Optima chewing up the floor of the fibergass battery well in Superformance. I really like my Braille. Also consider a 1.25 amp Battery Tender. I have mine wired in to the terminals with a pigtail sticking throught he battery box cover (make sure you have a grommet around the pigtail) I also always make sure the battry current is cut at the kill switch each time the car is put away.
http://www.jegs.com/i/Braille%20Auto...3121C/10002/-1