dont forget about FI, good sq
Xfl 12 or 2. 10s if you want new I got them can ship out tomorrow
Check cl in your area, I just saw two gcons near me for a nice price so you never know what might pop up.
I dont personally own any fi subs but from all the research I've done I hear that fi is good for sound quality plus for 1k rms the price is decent ya know. but I'm more of a spl type of guy and am also leaning towards the xfl's for my build right now. either that or just gonna save up a little more for the AQ HDC3's which are beast mode!!