I'm looking in to either buying 2 Sundown SA-12's or 2 Incriminator Audio Lethal Injection 12's, are these basically the same subs or is there one that stands out more then the other? I also plan on buying a Sundown SAX-1200D amp, so would I want dual 2ohm or dual 4ohm in either subwoofer I choose and how should they be wired? Series or Parallel?