it seriously all depends on what your running. i got a kicker kx1200.1 for my L7's. and i love it. but what are you gonna push? if your around 1000w, then id say kicker, orion, jl, or ppi. if your talking 2000w+ then your limited to a few brands (unless you wanna bridge amps). for that you can go with an orion 2500D (sick amp), mmatts, or ma. i dont prefer those last 2 brands, but theyre about the best youll find for pushing that many watts. if your talking less then 1000w, then you gotts a million options.