I bought EndoAmp only once, noted the diarrhea, adjusted a few things and still had it. It wasn't uncontrollable like the DAA, but it was an issue. Realizing it wasn't the most important component of the TRS, I just omitted it in future runs. I mentioned it a couple of times in casual conversation on the forums, but never really complained.
TCF-1 (DAA) on the other hand, I had an incident on heavy squatting day that forever scarred me. I complained quite vocally