I have the hertz energy, but sometime soon hopefully I will be upgrading them. I was wondering if it would be better to run active with the spl show sv200(midrange), sv200L(would this be a good mid bass speaker?), and maybe the st44( or maybe use a different tweeter from the mille line) or run passive or possibly active with the ml3pa? The crossover i'll be running with them would be the audiocontrol 6xs and hopefully adding on the eqs. The amp that will be powering them will be a dc 175.4. This is going to be in the future so i'm planning the build as of now and I love the Hertz that I have already. I have heard the mille line but have not heard the spl show line. also with the system properly set up and having clean power will 175 watts per channel be fine to run them on? Any help would be appreciated.