@Terry9. If I understand your description (and it isn't easy), you US cleaned the records 3 times, each time in new fluid. If thats what it takes to get to a "clean" record, count me out. Although, reduced stylus wear is a great benefit! I don't own a Koetsu, but my ZYX is worth protecting. I was considering the Monks to replace my old Harry Weisfeld machine as the US option is just too expensive, or just getting rid of all the analog stuff and going digital. So much work and expense involved just to play music.
Ultrasonic record cleaners
I have a modest lp collection, mixed bag of original college age purchases, used records before the current renewed interest, and some newer albums to replace some older issues from the p mount needle days. Have a vpi 16 machine and audio intelligent form 6 fluid. I’m not finding a significant improvement on my noisier issues. The price of ultrasonic cleaners have come down to a price I would consider. Appreciate the experiences of those who have purchased the ultrasonic machines, are they superior to my vpi and are the less expensive models effective?
TIA