To ask what's best is pretty subjective. But I have always had really good luck with optima batteries. In fact, I've never had one die on me. I had one in a Tacoma pickup for 8 years before I sold it. I had a buddy who had one for almost 10 years before he replaced it. I even had a yellow top deep cycle in a 69 I had that constantly died when I was in the military (it would sit for a year) and it would always take a charge and come back.
I recently put a red top in my 14. Even though when you search there is no "direct fit" battery, I found that this particular battery from summit fit the bill on size and right post positive. It fits great and all I had to do was cut a bit of the adapter supplied by optima so it would slide under the lip in the back of the tray.