Premier Mounts Am I Have 4 Pioneer Premier Shallow Mount 12's What Would Be The Perfect Amp To Run Them All Fairly Hard?

I have 4 Pioneer Premier shallow mount 12's what would be the perfect amp to run them all fairly hard? - premier mounts am

Theyre are connected a Hifonics 1200W amp, but since each subgroup is 350W RMS and 1400W max I want to push an amplifier a little more, but still remain below $ 500