I'm looking to build behemoth of a live rig, and I've been very intrigued by the separate preamp/poweramp setup. It gives the tone of the preamp and lets me choose the power amp of my liking. So I really like QSC power amps and I'll most likely get one when the time comes, but I'm pretty foggy on the preamp. I know I want tube warmth and growl, but that's about it. So far, the Eden Navigator and the BBE Maxt somethinoruther tube pre has caught my interest. Any thoughts on those pre's? Any other suggestions? Would it be cost effective to just buy a full amp like the SVT -3PRO and just use it's pre into the QSC? Any and all input is greatly appreciated.