Another vote for the HumminGuru. I purchased two, one for wash and one for rinse.
Far better than my VPI 17 Pro with Disc Doctor brushes and fluids. I only used the VPI to spin the disc during cleaning & rinsing and finally, removing the rinse distilled water with the vacuum.
The Humming Guru does a much better job.
I've also owned the Kirmuss and it was just too much of a pain for me and I found that the extra effort wasn't worth it to my ears. Also twice the price of the HumminGuru.
HumminGuru Ultrasonic Record Cleaner