Battery options BESIDES Optima?
Well, the best battery I have had between max priced gold flake autozone, a new big yellow optima, factory motorcraft and walmart brand is:
NAPA DP.
Dual Purpose: deep cycle / starting battery.
Most or all gel / acid / glass mat like optima and oddesy require a different charge scheme than a typical lead acid. Generally they require slow, very long duration charge when deep discharged.
My deep cycle / starting battery will (seems to) tolerate anything to the max. Long run time under load with the engine off and still starts engine like a hot battery. Excellent cranking capacity when cold. Recharges easier than agm.
Edit. Sorry I see you are looking for sealed. I dont think the DP is sealed.