The last battery I would run now is an Optima, and that's after having run three of them... two Yellow Tops and one Blue Top. All three failed prematurely.
Their quality took a nose dive after they were bought out by Johnson Controls and their manufacturing was moved to Mexico.
The battery I'd run is the superb Sears Diehard Platinum, which is made for them by Odyssey who makes mil-spec batteries for the military. I had one in my last TJ and it was great, for all of the three months I owned it until that TJ was stolen. I'm saving my $$$ for a new Diehard Platinum for my new '04 replacment TJ.