Hey everyone.  I am new to not only this forum but to FI as well.  I have always had "eh" subs that are sold in my area.  I currently have 2 10" RF T1's in a 3 cu ft enclosure....I am lookin to upgrade to something louder and better and am not sure of which sub to go with.  I listen to 75% heavy rap, 10% techno, and 15% heavy metal.   I like SPL mostly, but want to retain some SQ.  Are the Q's or BL's  a better replacment for what I have?