Optimas were good before the company was sold. I have one that's over 10yrs old in my track car. I've killed it atleast 12 times(not run it down), even tried to blow it up when the hot wire melted on the headers of the racecar. It's perfect still to this day. But I wouldn't buy one nowadays. I run dual diehard platinum battery's in the Duramax and the Jeep. No problems so far. I did kill one of them in the Jeep when I left the ARB fridge on. They are not cheap though.
Edit: the racecar now has an odyssey 625 in it. It still cranks over an LS1 that sits for months.
I'm looking at the Diehard Platinum. How did your fridge kill the battery? I would assume one battery will do the job for now.
I don't have an excessive amount of electronic accessories in the Jeep. I'll only have a winch, CB, lights, and hopefully a fridge soon. Obviously not all them would ever be running at the same, and if they were, the Jeep would be on.
I went ahead and picked up a Diehard Platinum Marine. It was on sale and didn't break the bank.