ground zero gzpa 1.6k hc

Hello guys, Im buying two ascendant audio mayhem 15s and am torn between 2 amplifiers. Either the hifonics brx12000d (1x6000rms at 1ohm). Or the ground zero gzpa 1.6khc or the 1.6k hcx (1x6000rms at 1ohm) I cant find alot of info and experiences online about these two/3 amps. But i would really...