@markmendenhall - there are plenty of threads here and on other fora that sing the praises of US cleaning. I've owned both the Audio Desk and the KL. But, since I'm buying a lot of old records, particularly UK and EU post psych stuff, circa 1967-71 or so, I need the ability to clean out groove grunge that, in my experience, ultrasonic alone doesn't always effectively accomplish. I use US cleaning in combination with a vacuum machine, and for problem records, use a fairly strong cleaner- AIVS #15, followed by a pure water rinse. My next ultrasonic will be a DIY, because it offers more flexibility. Many of the DIY US adherents get in way cheaper than the made for LP machines, but I'm after the feature set and flexibility. I use a point nozzle type vacuum machine, which doesn't have some of the issues that the more conventional wand type vacuum machines do. Rushton Paul wrote what I think is a seminal article posted elsewhere on this site, synthesizing his learning from a very lengthy thread on DIYaudio on US cleaning machines; he also experimented with filtration, a pump, and chemistry (the surfactant that breaks surface tension of the water and enhances cavitation). Well worth reading in my estimation.
