I have 2 12" Alpine type r subs 4ohms+4ohms and I was wondering what kind of amp i should need to power the two. I want something that will get enough power to the subs and make them hit hard. I was thinking about the jl audio 500/1, jl audio 800/1, alpine m1001, or the alpine md501. Are there any other amps out there that I can choose from? which one amp will give me the best results?