The Ross is very close to the first issue Small Stone in many ways, but actually quite different than the Bad Stone. The Bad Stone used the FETs in a hex invertor chip, and did not employ a "hypertriangular" LFO. That doesn't necessarily make it sound bad, but it was different.
I had a Bad Stone back in the 70's. It was just okay, and I eventually got rid of it. I prefer both the MXR 90 and 100 to that. The first phase shifter I played with was a Small Stone though. A friend of mine borrowed one from someone, around '73-'74 timeframe. I remember liking it real well.