Tryptamite: It certainly didn't feel like any 3/4-MMC, x-phenyldate, amphetamine, x-apb or x-FxA drug to me. It was a new feeling - slow come-on (1-2 hours)
Marked raise in temperature, a not very pronounced empathogenic feel, a _very_ nice tactile body high. Clean stimulation at the same time too. System was clear +10 hours. Actually, it felt incredibly good at times - I can see why the people who marketed it claimed things like "well, because of the way we tweaked this 4-methylaminorex analogue, it won't make people want to redose multiple times, thus reducing the _possible_ pulmonary problems". A well-balanced mix of SERT DAT NET activity, but almost a bit too strong at times.... I felt fine the day after - better than after doing 4-FMA or something like that at least, but something about the feeling has made me put this one in the bottom of the drawer. Could be an exotic gem, but with the 5ht2b uncertanties and all that .... nah...
The functional aspect of 4-MAR simply wasn't there, this was Party stuff (well, maybe it could be used in a psychedelic therapeutic situation, but I haven't tested it in those kind of lower dosages, at least not orally).
Hard to say if it really was 4'4-DMAR, but it didn't remind me of any other stimulants I've tried.
It seemed to disappear quickly enough after people started dropping dead in Eastern Europa (whatever it was they really consumed and in what amounts) but I've seen it pop up in powder form at some vendors (none that I have used before though).