Ultrasonic cleaning

I use toothpaste and elbow grease.

Ultrasonic and then a Nitty Gritty for me.  Great results without having to wait for drying.

I am only struck by the huge difference in recommended concentration of IPA (in the case of Neil’s recommendation) or Ethanol (according to Wizzzard). 2.5% IPA vs 22% EtOH. Somewhere way back when I picked up the idea to use 25% of 99% IPA in distilled water, plus Triton X100. (This was also before I read about Tergitols.) I have no evidence that 25% IPA causes any harm (using a VPI HW17 vacuum RCM). But it would be cheaper to cut back on the IPA, if 2.5% is just as effective. For now, I will stick with TX100, because I have a large supply of it. In any case, I always rinse with pure distilled water after vacuum removal of the wash solution, then vacuum off the rinse water.  That step does make an audible difference for the better.

Recommendations for a sweet spot cleaner b/t $200-$1000?

I have the Kirmuss which cleans 3 at a time for about $1,000. I have seen a new product HumminGuru on Amazon for $499 which cleans and drys 1 record at a time. It has good reviews.