Used them about seven years ago - before they were doing all the 2X and bullseye concentrations and dispensing. I was getting the standard concentrates in the 5/30/55 drums they offered at the time.
Forgot some of the names but I would know if I saw it. Used their neutral cherry
soap for lube in tunnel and foam brush. Used one of their presoaks in the tunnel and ss and used Bead Up as a clear coat sealer - excellent product. Beaded any car in any condition. MSO based but did not smear or build up at all. Also used some tire and wheel cleaners in tunnel and ss.
Solid line of products. Pricing seven years ago and in the traditional concentrations probably won’t help you much today, but I can speak to their quality.
I stopped using them at the time I was getting into tvp’s , super sealers and hot wax. I went to the more commonly known brands for name recognition when I started using them - Simoniz and Rain X. I’m sure Diamond Shine makes those products at a good quality also and would not hesitate to use them again.
It’d be pretty cool if diamond wash used diamond shine chems!