The Loricraft record cleaning machines look very promising, using a small point vacuum as opposed to a vacuum slot.
The PRC-4 has a stronger vacuum pump compared to the PRC-3, but is it really a significantly better choice in practice? (the difference in price, amortized over years of use and 1000's of cleanings, is less of a concern).
Great news, Dan! Join the club. I assume you will be using the AIVS fluid system. How many steps? I added the No. 15 as a pre soak to the standard 3-step plus an extra final pure water rinse. Great results. Enjoy listening to more of the music from now on.