I have a zx750.1 and a cvx12. I plan on upgrading and getting either 2 10" kicker L5s, 2 12" kicker l5s, or 2 10" kicker l7s. What should I get? Im looking for loudness. Also, Kicker amps tend to power more rms, so were looking at about 800-900 rms. Thanks for all your help! Also, a person told me I wouldnt see barely any difference... Im 100 percent sure they are wrong. 750rms to sub isnt going to be as loud as 750 between 2 subs. More cone area,moving more air etc. correct?