I got a blue top Optima last year and was thrilled with its performance. First off I do most of my fishing a night and have every thing wired to this one battery. Trolling motor,nav lights,depth finder, spot light, and interior lights. My old Interstate batteries would lose power near morning and have to charge 8 or 10 hours. The Optima has lots of power and doesn't lose any even if every thing is on at once. When I hook it up to charge it has never taken more than two hours. Most times under an hour.I can't say how many years it'll last but I expect good things for the price I paid for it.