hi! this may seem stupid, but here comes. what are the diferences between a 4 ohms cab and a 8 ohms cab with the same power. if i have a 4 ohms amp with 600 watts (mono), what would be the best choice, 2 cabs at 8 ohms or 2 cabs at 4 ohms and what would be the the impedance in both cases and why? one more thing, if you want to plat loud what would be best, a good power handling or a good sensitivity. for example, between a cab with 400 watts rms with 100 dB/1 W/1 m and a cad with 350 watts rms with 105 db/1 W/1 m what would play loud and why. tanks!