Tergikleen or AIVS formula 15?

"2 Spin Cleans AND a Degritter?"

Yeah, I got the 2nd one for around $40, brand new. couldn't pass it up. It's handy to have it for a rinse which opens up more methods to try. 
I've always used a Spin Clean for new (to me) record that I get used. 

I'm not a record collector, my real hobby is cleaning records   ;)

My set up is similar but without an ultrasound. Over the past 50 years I have gone to the less chemicals that touch my vinyl the better. I use Tergikleen (20 drops per gallon) (or Photoflow) in a SpinMaster, too. Whenever I buy New brushes for the SpinKleen I reserve one. I use a "new" brush and and older brush, and flip the record halfway through my process (anywhere between 12 full revolutions- and whatever might be needed. I rotate in both directions). I rinse with distilled water from the grocery store over the kitchen sink using a pressurized spray bottle. I dry/ final clean on a Record Dr., once again, rotating both directions, maybe a total of six to 10 rotations per side, and finish air drying with a bamboo dish rack. I pre-clean with a shaving brush, and use a Zerostat for obviously charged records. New inner sleeve and a quick note on the little yellow sticky with date cleaned, condition, whatever. New outer sleeve, if needed, and then back into the rotation. I don't think that there's anything more personal in our world than our record cleaning technique. Maybe stylus care comes close. My changes now are incremental, maybe a new style of label protectors, different "examination", or curator's gloves. Maybe I should start a Go Fund Me for a Degritter...I would only mention what I do, and never tell what I think you should do. It's a journey, not an assignment.

Interesting. I'm not sure what purpose having an old and new brush serves, other than needing to buy brushes less often. 
I also give them new sleeves and a sticker with the date & fluids used. It's the Engineer in my bleeding over to civilian life 
I used to use a method similar to yours with the Spin Clean and Disk Dr. It's not bad for the money invested, but now I prefer not to have the record touching the lips of a vacuum machine after it's clean. Possibility of recontamination bothers me.