I have been looking around a while and going back and forth, I think I have narrowed it down to 3 sub types. The Fi Q and BL 15's or the Elemental Designs 16Ov.2 subs, I am going to put these into an 08 Mazda6 and I am looking for good SPL with a nice tight SQ. That is why I have narrowed it down to these models. I would like some opinions on the difference in the Q and BL's and if anyone has experience with the ED and how they would compare to the Fi Subs. Also Which amp should I get 2 run these? I was looking at a AQ2200D and an orion d2400 , any others I should look into or work well with these? I would like to order these ASAP, any help/opinions would be greatly apreciated. Thx Josh