What is a good Amplifier for 1 Kicker CompVR 07cvr124 4ohm Dvc Subwoofer?

I have 1 Kicker CompCvr 07cvr124 4ohm Dvc sub and i have no clue what type of wattage amplifier i should get. My head hurts. The subs Rms watts is 400 and peak power is 800 watts. Should i get a 800watt 2 channel amp at 400watts per channel or a 400watt amp at 200watts per channel? Should i get a monoblock amp ar a multiple channel amp? And wiring Should i wire it Parallel at 2ohms or Series at 8ohms? ANY SUGGESTIONS? i would like the most power for my sub without blowing the sub or my wallet Thanks.