i am running six 12" alpine type R subs off of a MA audio hk4000d. At nearly 4000 watts rms my battery and alternator cant keep up also i have a five farad power acoustic capacitor. And i was wondering what would be the best for my system. I am debating between two kinetik hkc2000 or either four xstatic 800 or four xstatic 400 batcaps. I am not sure what would be best any suggetions?