I say more for the amp or equal value. High quality subs seserve high quality amps, low quality subs...well a high quality amp will make them sound a bit better but it won't make a big diff.
Don't skimp on the amp, wiring, or battery!//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif