I was also on the hunt for Victor's oscillator. I had just missed one on ebay, so set up a search, and had to wait over 6 months for another one to appear. I got the 1 kHz model. I measure mine at <= 0.00008% (0.8 ppm) THD on my Panny VP-7722, but that is the measurement floor of that instrument, so it is not a meaningful measurement. The actual THD is lower. It's a nice little unit to have. Get one while you can; the superb National opamp he designed into it is now out of production (the fab was closed).