I have a dual set-up, and bought Optima red-tops. They were probably the first batch that was made in Mexico, and they started to fail on me within two years. As of two years ago, they wouldn't hold enough of a charge to EVER start the Jeep, and I had to use my booster-box to start it whenever I was going to move it or drive anywhere, expecting that I'd simply never turn the engine off. I always had jumper cables.
In my Subaru, I have an Interstate battery that is now 11 years old and still works like a champ. I threw in the towel and replaced the red-tops with two Group 34 Interstate batteries from Costco for the CJ.
If I had the cash, I'd grab the X2 Power Premium from Batteries+Bulbs. They have been getting rave reviews up here, but that's like $750 in batteries for me.