I want to get one 15" subwoofer for my truck for $350 shipped. This will be my first system ever so im kinda excited! I want enough spl to shake things inside my truck but i want a sub that will hit lows well. The subs i am looking at are the Fi Q 15", the Fi Bl 15", and the AQ HDC3 15". I am not sure about what amp i am going to use but right now im leaning towards the AQ 1200d. If there is another amp that will create a better setup for one of these subs for about $250 then please let me know. I will have a ported box made for which ever sub i choose. I have read that it does make a difference what vehicle its in, so its an 04 Chevy Avalanche facing foward in the cab replacing the midgate. Also note any other subs for the $350 shipped that would be worth looking into as well as an amp to suit them. Any help and opinions are much appreciated.