I haven't purchased batteries in a long time. I need a cranking battery so I am asking for some advice on what batteries are reliable and good. I have a Triton 18TR-SE with a Mercury 150 Optimax, a 2010 model. I was thinking of buying an Optima cranking battery, so I don't have to worry about water and it should last a while. I just don't know if the Optima batteries are worth the cost. What does crappie.com say? Thanks for the help.