This is my battery.
Duracell AGMI think sealed is the right choice?
One other thing after reading a rather long and boring article looks like the best thing to do is plug my converter/charger in now and then and let it do its thing to keep my battery in the best shape. I have one of those high tech converter chargers from BEST converters. The reason I say this is because if you are using your solar you never really have enough peak solar time to float equalize and all that good stuff. When plugged into the grid you do.