What is the best way to clean Vinyl?

Ultrasonic seems to be the best. I use a wet vacuum system, which I think are most popular because they work well and a less trouble. I use a German made Nellie after 20 years with a much more budget oriented VPI.

Here's a how-to video that may be of some help.

DeKay

I prefer ultrasonic. I really like the one-button convenience of the Klaudio, and there's also the AudioDesk. They're pricey, though.

I've used many different ones over the years and admit the Kirmuss did a great job but based on how many steps it took and the time, after a few weeks it just sat unused. Git a Keith Monks unit and it's quick, quiet and does a good job as well, I now clean records daily.

I clean by hand (lots of videos on such) and use a Groovmaster to protect the labels.

DeKay