I have a Rockford Fosgate Punch HE 12" sub, and Its rated at 200 watts rms. I am looking for an amplifier to power it, but I don't know what to get. Does anyone have any suggestions on brands. I was looking at a Rockford Fosgate mono amplifier, but also a Alpine 2 channel amp. If anyone has had experiance w/ the 2 brands, let me know what u think of them.