I have had some bad luck with kicker. Last year I went through 2 L5 12's and then 2 L7 12's. I powering them with a syn 1. I'm thinking of going to one ported XXX wet sounds 12" or a JL 12" W6 or W7. my question is will one 12" be good enough and which one would be better or is there something else that I should look at. the boat I have is a 2010 F21, going to put the sub under the drivers dash. not sure what I'm going to do with the hole behind the seat.