Sokogear, I use the Audioquest Anti-Static Record Brush before & after every record side (same with the Onzow) but not in a wet-cleaning regimen. My Knosti Disco Antistat that I use for a final rinse after US cleaning has goat hair brushes. US cleaning, for me, is a one & done type of thing and, then, the challenge is to just keep the records as clean as you can. I might consider running a record that has already been ultrasonically cleaned if I noticed a distinct reduction in audio quality and only after a lot of subsequent plays (e.g. a hundred or something along those lines). Not likely, at my age!
I'm still contemplating antinn's sage guidance and that of others and thinking my cleaning regimen might be improved by using either LAST POWER CLEANER or Alconox Liquinox as a manually applied pre-clean step, using LAST applicators. Then, I'd use the Knosti as a rinse after that, before using the UCM. I think I will, also, ditch the MoFi Super Record Wash and replace that with just distilled water and a small amount of Tergitol in the UCM tank. After that, I'd use the Knosti with fresh distilled water for a final rinse. I'm still going to use LAST RECORD PRESERVATIVE as my final step until or unless someone or something can convince me this isn't a good idea.
All of this still brings me back to my original question of whether or not this crazy labor-intensive labor of love results in any better audio quality than just using the Degritter or something similarly less labor-intensive and considerably less time consuming. If I could be reasonably assured that the Degritter or something similar would accomplish the same results I'm getting now or better, then, I think I would spring the 3 grand it takes to get the Degritter or something like it.
In the bad old days, I always used, initially, a WATTS Disc Preener, otherwise known as a WATTS Parostatik, I think. Remember those? You had to remember to occasionally run this little tube on the inside of it under water. Then, I graduated to the Discwasher with D3. Remember that one? It had a nice hollow solid wood handle (think it was walnut) and the little bottle of D3 solution fit right inside of it. Occasionally, I also used a liquid stylus cleaner, too, but probably not as often as I should have and certainly not as often as recommended. My records always sounded great. However, now, after the US cleaning thing that I do, they sound, noticeably, even better. I'm no scientist. So, I have no real idea why that is. Maybe US cleaning is removing some old D3 solution left behind or whatever the WATTS Disc Preener may have done? All I really care about is the sound improvement(s) and preserving that for as long as I can.
If I were ever to go back to using a liquid stylus cleaner again I probably would go with either the MFSL or LAST Stylus Cleaner. The reason I like the Onzow is because, if used properly and safely, I don't have to worry about eye/hand coordination near as much as using a liquid or the possibly of liquid wicking up the cantilever. Damage to the stylus or cartridge, for me, would represent an $800 PITA, not including shipping & handling and paying a pro to install/re-install a cartridge properly. I did that in the old days with my old Phillips TT and a paper protractor but, now, it seems there are much more accurate ways of going about doing this.
I know there are cartridges out there that cost many, many times more than $800 but, for me, $800 is a lot of dough. Although my hands are still steady, I get the heebie-jeebies anytime I go near the stylus. Handling the tone arm is about all I trust myself doing these days. I just don't want to risk a thousand dollar plus screw-up. I've got just the kind of buzzard luck where something like that would happen one day.
If I ever run out of LAST stickers, I can always buy more but, frankly, the outer record sleeves do the job just as well. One of the mistakes I made was sticking some of the LAST stickers on the record jacket, instead of the outer sleeves. Apparently, this detracts from the value of some collectible records at resale. Somebody else can worry about that after I've gone to the big music hall in the sky. What's that old song with the line that goes "I know they got a hell of a band (up there)"?
All the best!