in my experience 15's play better with 10's not 12's, i like the re audio or hertz mille ml3800
and stick with the same brand and series

 

have you considered TC sounds LMS? That has a reputation for SQ and SPL.

 

No pioneer thats peak only!!! i played that game 4yrs ago. and the xxx re's are garbage since scott sold the company So i would go with his new Q's Plenty of throw and a beast for power not over doing it. and very affordable!!! call scott tell him Mike Martinez told ya bout it and he'll hook ya up!! He's a good friend!!!

 

^^^ scott was still the original designer but i do agree the newer XXX doesnt touch the old one. Ive dealt with all of those woofers other then the stroker. Pioneer will probably get the loudest, XXX will hands down play the lowest, T2 is a nice overall woofer but doesn't "exceed" out of the 3 if that makes any sense. your original question is sorta odd

 

don't forget about the SSA Xcon...31mm one way excursion and they drop HARD
I'v been bagging the crap out of four 15" and they are proving themselves
to be extreamley tough and reliable .........also made in the USA

SSA woofers are built around SQ....you won't find a better sounding woofer for the money

 

true 1 love 1 sub!

 

have you considered the Sundown 15inch Night shade? it is a little spl heavy but gets very loud on 1500-2000rms!!