"Best"? I’m not sure there is such a thing. Apart from budget, there’s the time and effort factor, the condition of the records (I buy older copies 10/1 over new) and your ability to evaluate results meaningfully.
My "best" results come from a combination of manual cleaning, vacuum on a big Monks and and additional step into a KL ultrasonic machine. Not a cheap point of entry.
Tima did a very good job taking on the challenge of a high end version of DIY after buying a cheap Chinese US bath and advanced to an Elma, filtering and other improvements. His objective wasn’t to do it on the "cheap" (though there are plenty of cheap ultrasonic machines out there) but to achieve best results (I think Tima had and may still have a Loricraft, which is similar to the Monks in overall design).
Neil Antin’s "book" on Precision Aqueous Cleaning of Vinyl Records is an encyclopedic reference that combines materials science, chemistry and other disciplines. It is not an easy or "light" read but Neil’s knowledge and willingness to answer questions is unparalleled in my experience.
I was honored to publish the first several installments of both Tima’s work and Neil’s, now in its Third Edition. The funny thing is, those two got together and exchanged some ideas which are captured on the thread from What’s Best that @mikelavigne posted upthread, so that is as good a place to start as any.