MX138 and MX140: I don’t have a clear sense of a difference between them, except that I was more aroused wearing MX138. Both of them are excellent mood enhancers, though, without tipping over into the giddy-spacey territory. Some posts indicate that the Liquid Sunshine series might be sexually dimorphic (the men and the women were somewhat divided as to which ones they had good results with).
Lots of people seem to like Instant Honesty x2 or x4 - not sure about Instant Shine. Instant Shine is the shortest-lived (I think) of all the Instant line and there was some talk about Androtics making it in an oil base someday so it would last longer on the skin. I don’t know whether getting it in double strength would make it last any longer - I’d guess not.
About CTTM-2: It’s 50/50 alpha and beta androstenol, and nothing else. Instant Openness and IH both contain alpha, beta, and some other refinements to help smooth out its effects.
Did a a search for MHarris posting on CTTM-2 and came up with lots of stuff, including this thread where he lays it out: