I bought my first VPI cleaning machine back in the mid '80's (about 30 years ago). IIRC it was a VPI 16 when the suction tube was mounted diagonally on the top. I cleaned all 15,000 of my records with various VPI models, and cleaned almost all of them again (including the many used records I bought from London in the past 18 years) when I switched to Disc Doctor liquids and brushed, still using a VPI to do the suction for the cleaning solution and then the distilled water rinse. When I started my ripping project 5 years ago, I was just ripping records that I had cleaned with the VPI/DD method. At about 2000 records into the ripping, I discovered the Audio Deske System Ultrasonic cleaner and recleaned the last 7500 records (which had all beeen previously cleaned by VPI/DD).
Except for a handfull of records that have only been cleaned by the Audio Deske that I have acquired in the past 3 years - almost all new pressings, all my records have been cleaned at least two, some three time (VPI, VPIDD and ADS). There are are still about 5000 records that have only been cleaned by VPI, VPIDD or just VPIDD, which I do not plan on ripping.
So my experience with record cleaners has been long and very positive, but with almost all records have been cleaned at least twice with two different systems, I don't have good comparisons with the effects of different methods. I haven't tried this but it may be like cleaning the carpet with two different vacuum cleaners. The second one will always pick up something that the first one leaves behind, no matter which one you start with.
BTW, the vast majority of my 15,000 LP's have been purchased used (that however means I still have a few thousand I have purchased new.)
Larry