This is a pretty old thread. David Ratcliff, the guy behind the V8, passed away in around 2019. I think the "burnishing" Harry W heard was the result of the chemistry without rinsing- (I wasn't a reader of the old VPI forum so I'm taking this second hand).
I've cleaned thousands of records, many of them older high value pressings, using a combination of point nozzle vacuum and ultrasonic. No negatives, no damage, no loss of sonics. I like the synergy of multi-method cleaning, especially since I'm buying records from the '70s (mostly post bop) or earlier. Occasionally, I get records that have never been played. They still get a cleaning before play here.
The US adds an additional "fine" cleaning to what my Monks Omni can do-- that said, if I had to live with a single machine, it would be the big Monks.