I own a Degritter and have used an Audio Desk and a KLaudio. I have not tried the Acoustic Sound revamp of the KLaudio but will say it's a bit pricey. I cannot say that one machine cleans better than the others, but I will say that the Audio Desk break down and require more attending to, expensive parts replacement, and KLaudio, well they went out of business. My dealer sells or sold all of them and when I visit them, especially the large, used record department they have, I would see broken down Audio Desk and KLaudio machines not working, and in need of repair. And the Degritter? The same one since they first received them. It has cleaned thousands of records without a hitch. It's the most reliable, cheapest to run (almost nothing), and as effective as it gets. It tells you when to clean which is simple, replace the water, and you don't even need to use their filters. You can cut your own from cheap filter material you can purchase at the local hardware, or building supply store.
Most of the tank type based machines, built around a generic jewelry cleaning cavitation machine that has the ultrasonic emitters on the bottom of the tank as opposed to the four, two on each side of the tank, facing the record. The frequency of these ultrasonic emitters has also been optimized to clean vinyl records. As far as the inexpensive machines go, I've never heard of any good results with them outside of websites that cater to inexpensive products.
Lastly, I own an opera set that has been in my family for 65 years and I thought it was pretty damaged but what a performance of Boris Godunov (Mussorgsky), the clarity of the voices, the cathedral bells, the best I have ever heard. I thought I would never see another copy until a friend found it on Discogs and I bid on it and got it. It was very clean but it was mono, mine stereo and while pretty much the same in a lot of respects, the stereo version is just better. After cleaning the stereo copy several times on the heavy setting, I started to like the old banged recording over the cleaner mono version. I'll say this again; I thought who would spend three plus grand on a record cleaning machine? Now, who would not want own one of these machines? And I have owned a VPI and a Record Doctor and grew up cleaning my lp's on a Keith monks machine at a local dealer that was free to customers. Degritter takes cleaning lp's to another level, it's the easiest to use, and frankly, if you don't purchase something like this, buy a Spin-Clean. I own one and frankly I never really found the vacuum machines much, if at all better.