In the front I will use 6.5" speakrers, so wich one: the kenwood p707 comp. 65rms 4ohms... or the kappa 63.7i with thier x-overs 75rms 2 ohms... already i have 6x9 kappa 639.7i 110rms 2ohms in rear all will connect to punch p4004 100 x 4 @ 2ohms
infinity hands down, no question about it. Good rule of thumb for car audio, stay away from kenwood as much as you can. Infinity makes excellent speakers.