What record cleaner is the most bang for the buck??

+1 I prefer ultrasonic cleaning. Once is enough, after that take reasonable care of the cleaned records and just use a brush if necessary

I recently bough an Audio Desk used. I have very few used records, and quite a few higher-end pressings. I just completed cleaning all 350 or so. I’m really surprised at how much better they sound.

Once cleaned with US, there is no need to use anything other than a brush - I use the Audioquest carbon.

Prior to this I used the SpinClean - it does an OK job but there is no comparison to US and the manual process is a pain. 

Lastly, I don’t understand what a dust cover has to do with this question.

I use ultrasonic record cleaner

1+ Okki Nokki

I use this stuff made buy Bugtussel called Vinyl -Zyme Gold. I find it to work really ,really well. Been using it for many years ,like 20 and it never ceases to amaze me. 

My wife and I just went to AXPONA 23, and I saw the Kirmuss demonstration, and I am saving for his system. not high cost, and it looks effective based on his experience. I am sold. Maybe a used on on ebabe.