I've had 100% great experiences with all Audiogon sellers, both private and commercial, and both of the main local high end audio dealers, so I feel very lucky. I'm not sure why either, because I ask a LOT of questions and tend toward extreme fastidiousness with respect to sonic perfectionism. I did NOT, however, listen to a product in their store and then try to find the same thing cheaper on the internet, UNLESS it was a second hand unit from a private seller, and I even that was done only once, AND the one I bought was an earlier version, a discontinued and no longer available model.
Great experiences with dealers:
Planet Audio/Video (Steve)
Reference Audio Video (Duane)
Great experience with internet sellers:
Audioparts (Stu Wein)
Dakiom
Odyssey Audio (Klaus Bunge)
Porterhouse Audio (Albert Porter)
Signal Cable (Frank)
Great over the phone information and advice from two people whom I consider to be geniuses:
Ralph Dodson of Dodson Audio
Dale Pitcher of Intuitive Design
All of the above have been wonderfully "instrumental" in helping to assemble my current system, especially Steve, Klaus and Duane in terms of advice. Warm thanks to all.