i believe a lot of people will agree that alpine is good at f1 amp, and hu, not speaker. bout hertz or boston(3 way, mid range), i installed BOTH on my aurion, tested, with sound-deadening(2 lv), ended up with hertz. Happy with it. BUT most importantly, HU! No matter how good is your speaker, if u hv a sh!t HU, u r just wasting your money/time.