hahaha ill tell u right now that all of those systems u just named would score better then you FREE AIR.....unless they had no clue what they were doing, and were running subs off of their head units etc. something is fishy....a basstube is probly the worst thing ive ever herd of in a car as far as bass goes.....id rather get one of those bass shakers that vibrate to music....so i highly doubt that 2 l7's lost to a bass tube and i know everyone will agree wt me