i cant decide! i want the JL to match my other amp but the zapco is just a tad bit better... also the JL might be a little too powerful for the avalanche.. i know they are rated at 800 watts rms but they can definetly take more but im not sure about the 1200 that the 1000/1 puts out... also i want to run it off my 135A alt with a batcap 800 along with a 300/4