Kicker Comp VR's pu the Sony XS-L1290P5 to shame. Just by a pair of Kicker Comp VR 12's. And a nice kicker Amp to push them, and you will be very satisfied. You can get a pair of Kicker Comp Vr's off of ebay for around $179-$200 brand new, from Indoaudio.com i think.