Battery choice

I been buying Dura-Cell batteries , so far so good , I have never replaced one yet and they give a year warranty , a lot of other M/C batteries these days are 3 months ------ the guy at the store told me to pick up my old battery and the new Dura-Cell , the Dura-Cell weighs almost twice the OEM battery ---- I like them so much that I put 3 Dura-Cells in my boat , now they are expensive , I was getting them for $100 , they went up to $125 now days for the 14