I need a new amp for either a dc level 4 12 or 15in. Im new to dc subs and i know that the rms is 1000-2000 but i hear that they run closer to the 2000? Because the amps ive been looking at are the aq1200d, and the SAZ-1500d. Would it be a better choice to just throw out the money for the sundown? Or would i need even more power than that? suggestions would be very helpful thanks