we have all optimas in our boat right now.... and THERE WILL BE NO OTHER BATTERY IN MY BOAT EVER!!!!!!!!! They hold up better over the years... and I THINK they last longer on a charge then any battery I have ever owned! I have many different types wally world, interstate, trogan group 31(very good batteries),everlast,and I am sure a few more over the years.... my boat is on the water ATLEAST 1 day a week, some weeks 3 or 4 days a week every week of the year and I am telling you, you cant go wrong with a blue top optima!

if you buy a set I bet you never buy another brand of battery again!