I ALWAYS go with the Everstarts. I just replaced mine this year because I wanted too, not because I needed too. I was looking at the sticker on the side of the battery and it was labled April 04. I figured I got 4 seasons out of them and with no problems whatsoever. I run a 74 MinnKota and those batteries work great. Now, they are the 27 series batteries and I use a 31 series for the start battery.
Like everyone else said----there's always a Wal-Mart around if you have a problem.