I say go with the 1 15 everybody runs 2 12s that horse has been beat to death a million times over.... be different, break the mold, go with the 15. PLUS if you can match the box to your car (box pos. tuning. ect...) you will be louder than all those best buy MTX, JL, Rockford brainwashed punks with less area. That would be way more impressive, at least in my eyes, to do more with less.