For those of you that run this setup... Would you say the power or the preamp "makes" most of the sound that comes out of the setup.... basically.... I love the eden metro 2x10 combo sound.... but i want a little more power, a little cheaper and or more upgradeable later....so Eden Navigator +power amp = eden tone? or something totally different? Secondly, why do you use this setup? I mean, an eden wt800 isnt that much different in price than a quality pre/power setup.