Whats up people I need some feedback on what kind of subs I should get to replace my 12" Kicker Comps they just arent loud enough for me the Xmax is like 9mm I need a sub that doesnt use a whole lot of power,can work well in a reasonable amount of box space,and has a xmax of at least 12mm only one I know of is the JL 12w3v2 but there has to be a cheaper alternative.All feedback is greatly appreciated