I suggest Auto Zone Duralast battery.
It's made by Johnson Controls. One of the big players in the battery world.
http://www.autozone.com/autozone/par...tery/_/N-8gcxb
3 year replacement. The rest is pro-rated fairly.
You should buy a float charger - Ctek 3300 on ebay. You can find them for $50.00 and they are excellent.