I am picking up a colorado tomorrow and im trying to decide on which subs to get. I am thinking about ordering 2 fi q 18s. they otta sound good in my truck. what ya think. I have a price range of no more then 650 shipped to my door. I have a memphis 2500 d, 1 ohm stable. tell me some options. i do want major spl but im no gonna tune high like i originally was going to.