I picked up the 2009 TADAC this past Christmas. As others have said, Paul is great to work with and responds quickly to all inquiries. I've enjoyed my TADAC and found it to be sensitive to tube rolling. My favorite 12AU7s to date are the RCA cleartops - clear and open with a good frequency range and wide soundstage. The TADAC replaces the analog outs of a RWA-modded SB3 which now serves as the transport. I did try the Benchmark in my system, and as my wife said, "it sucked the life out of the music" (translation - cold, thin, clinical). The TADAC is definitely worth a try.