I was actually talking to someone about it the other day, they said that it was "okay for what it was" and its a pretty reasonable stimulant but don't expect anything magical. No experience with it myself so take that for what you will
I actually like it very much. Number one deciding factor whether I like a stimulant or not is its ability to NOT induce anxiety, which 2-MMC excels in; atleast compared to all the other RC amphs and caths I've tried before (excluding heavily serotonergic ones).
Even if the stims don't belong to the same class, it more or less follows the same path -> a rush of stimulation followed by increased sociability that lasts a few hours -> an unpleasant offset accompanied by a sense of doom
However (although keep in mind, this is my first time trying it, so many variables are at play) the last part is almost non-existent, or heavily reduced
This makes sense to me, as I used to be a very frequent user of 3-MMC, and besides feeling gloomy and 'braindead' after a session, I never had much of a comedown on it (as opposed to literally every single stimulant I've experimented with)
Although it's important to mention that I DID feel horrendous 3-MMC comedowns in the time period I was properly abusing it (think, ~1.5g every weekend with copious amounts of alcohol)