Still searching for a basic two-channel rig under $500. The Marantz PM7000 is a nice integrated, recommended by several folks around here. It's built like a concrete block and sounds terrific. The Rotel RA-02 sounds sweet as well, but definitely lacks the heft of the PM7000. Haven't heard an AudioSource setup, but I'm interested in the PreOne + AmpTwo. Reviews are solid on this stuff. Thoughts? My guess is that there won't be worlds of difference in performance. Any help appreciated in advance.