Amplifier choice?

I need to know what kind of amp I should get with these subs:
Rockford Fosgate P3D4-12 x2

Specs:

-Subwoofer Size: 12"

-Peak Power Handling: 1200 watts

-RMS Power Handling: 600 watts

-Voice Coil: Dual

-Impedance (Per Voice Coil): 4 ohms

I want to know what amp you all would suggest when using these subs.

I also just noticed I posted in the wrong section...

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