Assuming the same physical size battery that optima would be a DOWNGRADE.
Optimas have only about 60% of the capacity of a same size other battery,,, You can easily see why this is when you look at 'em (only 60% there, rest is air) I might add they are also only 60% the weight of same size regular batteries (They comply with the watts per pound ratio for all lead acid batteries) but they take up more space.
They are also the most expensive AGM you can get.. Go with Lifeline if you really need AGM or Maintence free if you can mount them "This side up"
Best bang for the buck is always GC-2 pairs (Golf car batteries) but they are maintence required type.
Home is where I park it!