So, having read this thread :-
http://www.bluelight.org/vb/threads/791073-What-is-wrong-with-the-MDMA-available-today/page25
Im in full agreemednt with the original posters of that thread.
I started taking pills in 96 and and got a 1.5/2 years of pure bliss until the synthesis changed. This was then the start of the mitsubishi era. There was a noticable change of effect from the summer of 97 to 98, less empathy, but not lacking empathy.......then pills were pretty decent for several years, still very dancey, chatty and big eyeballs.
I dropped out of the scene a little from 2002 - 2006 , but had the odd pill with desirable effects.
Then 2008 - 2010, the zero MDMA era, piperizine shit. Just horrible! Night clubs playing decent music were getting empty.
The 2010 the start of the "super-pill" come back.......Pills testing black on the marquis again, but the dosage increased. Litterally zero empathy, no loved up feelings, very little pupil dilation, often mongy, basically not that great. Whatver anyone says, I know its not the same drug, certainly not that same effects.
As FUBAR mentioned earlier, 6-APB is closer to the original MDMA in terms of effect, empathy + euphoria, dilated pupils and a general great feeling.
I hope that one day I'll get my hands on some proper old school MDMA.
Anyway thats just me 2 cents....Swedger