What would work better 1 ohm, 2ohm, or 4ohm?

I have two Boss NX129DC Onyx 12" Subwoofer Dual 4ohm Voice Coils in a R/T 300 Enclosure Series (324-12) - Dual Slot Vented 12" Sub Bass Hatchback Speaker Box.I havnt bought the amp yet but Would it be better to run them at 1 ohm on a Hifonics Brutus Brz1200, run at 2 ohm on a Hifonics Brutus Brz1700, or run at 4 ohm on a Hifonics Brutus Brz2100. And how would you wire it.