Reviving an old thread here
I only use ultrasonic cleaning for my vinyl. I have done many before/after tests. It's consistently the best possible method (and I have tried a lot of different methods) I have used. It's hard to accept that there is any degradation taking place. EVERY record I have cleaned sounds considerably better. Hands down.
I realize that there is a ton of debate over every nuance of this hobby of ours and I realize that this is my opinion and own that fact. But, in my humble opinion using US is almost as big a change as replacing my cartridge with a Hana moving coil. Which was like re-discovering my system.