yes, better for more power, but your using the same powerr, and taking less cone area...keep what you have, unless you upgrade more power. Then, maybe step to 4 CVX 12's, but for now, IMHO, your better off where you are at.
Well heres the thing, I heard my boys 2 15" CVRs on 1000 RMS and they are hittin harder..in the same style car in a prefab box. I built my box, 6.5 cubes@ 33hz or so. I think I need to redo my box and tune higher and maybe upgrade to 4 12" CVXs.