I'm not sure how relevant it is now since the original post was back in August, nevertheless, I offer the following:
I agree with " restock ". For years I had the VPI 17 which was a fine machine ,however back in the fall of 2015 I started to read up on the ultrasonic machines. Although they received rave reviews I had concerns about what they may do to the albums over time. Therefore, I purchased the Clearaudio Double Matrix Professional Sonic. It does a great job cleaning, has multiple modes should you desire, although I have not had the need to use them as the auto mode does the trick. Moreover, its built like a tank.
I agree with " restock ". For years I had the VPI 17 which was a fine machine ,however back in the fall of 2015 I started to read up on the ultrasonic machines. Although they received rave reviews I had concerns about what they may do to the albums over time. Therefore, I purchased the Clearaudio Double Matrix Professional Sonic. It does a great job cleaning, has multiple modes should you desire, although I have not had the need to use them as the auto mode does the trick. Moreover, its built like a tank.