It's SWIM's experience that the Torch is very clean and almost like pure mescaline. San Pedro and Achuma are full of other stuff. SWIM gets noticeable vasoconstriction effects from even low doses of Achuma, but not much from the others. The trip from all three is different. Achuma is often said to be the most peyote like. SWIM finds Achuma to be very dream-like in character. For SWIM Achuma is the least like mescaline of the three.