fi Q 18 vs fi bl 15

[Coryaddison 0]

I'm kinda new to car audio. Right now I'm just running a sundown e8v3 on a boss armor 1500 which actually puts out the ammount I need. Anyway I really want to upgrade and be loud. I'm not about spl and hitting high dbs more about music and perceived loudness. I can work with about 3.5 cubic foot box. I'm considering either a fi q 18 or a fi bl 15. I just need advise on which would be better.

[Stephen93s10 40]

Your posting it in the wrong section, and you've already posted the same exact question in general audio