Ultrasonic LP Cleaning vs. “Thread Type” Cleaning (Keith Monks/Loricraft/etc.)

There is a huge variance in US cleaning machines. Your question is rather like asking if a car is faster than a bike.

As @whart has noted, US results depend on frequency, power, temperature, spacing, surfactant, and rinse. It’s only when you get careful with all of the above that your results approach optimal.

The first question to ask is how much you can trust your US bath to meet spec. If it’s medical equipment from Germany, you can trust it a bit more than flimsy-consumer easy-to-use from anywhere.

There are threads on this topic which you might want to examine. A high class expert on cleaning technology, whose handle escapes me, contributed to one thread and refined my own cleaning process, for which I am considerably grateful.

I use an Elma US machine from Germany, and doubt very much that my records are less clean than anybody's.

I've been using the KM Prodigy threadless machine for several months, came from a VPI16.5 and find it quick, quiet (relatively speaking) and cleans better than the VPI. Yes US may clean deeper but are not as simple as this machine is. YMMV

Clearaudio Double Matrix - worth every penny 

I also recently purchased the KM Prodigy. It takes a little experimentation but after 5-6 Lps one should have it down. Just need to fine time the amount of liquid and vacuum for your room temperature and humidity but once you figure that out it holds true for just about every LP.  I can't speak highly enough about how quiet it is. I can put on a record, easily clean 4 LPs, and still enjoy what I am listening to. Not ultrasonic but does a great job to my ears. Never owned any other record cleaner. Can't say I won't upgrade in the future but right now I am smitten with it.

I finally settled on an AudioDesk I was fortunate to get onsale and haven't looked back.