Mile Nestorovic (RIP): seemed like a good guy when I talked to him about a much needed speaker repair. Mile was a designer for McIntosh during the day before he branched out.
Audio people you've had contact with that proved to be good people.
Not just audio...but good people in many ways.... For me, Henry Kloss, Saul Marantz, Jon Dahlquist, both Mr. Conrad and Johnson, Harry Pearson and some others. On the opposite end, I did meet some large egos that have mainly faded into the walls.