I would go with AGM battery

Sears Die Hard Platinum has got good reviews


The down side,cost. And if you run them down low they might not take a charge with an older battery charger so you might have to buy a new one

The upside, less up keep and they can be placed anywhere without much worry, and can take the extreme heat and vibration

I'm still running the OPTIMA red top battery that came with my jeep and that's pushing 10 years old. That was before they were owned by johnson controls, and I have not heard good things about the new optima's

for a flooded battery I would use Deka batteries