Sadly I couldn't find any of my RC of choice (3-fa), so ended up ordering some ethcathinone.
I know everybody reacts to things differently etc, but my own personal opinion is that I'm not really a fan.
I have used dosages of around 30-40 mg, with coffee. Compared to other RCs I have used (3-fa, mephedrone, methylone) there is no real taste to it when mixed in coffee. The buzz itself is nice enough - typical stim, but seems quite short acting ... maybe two hours. The residual effect of course lasts a bit longer, meaning you probably won't be able to sleep as easily.
Doesn't seem to affect appetite much. I can eat fine on it.
However ... and this is the part I am not fond of .... compared to the other RCs I have used, this makes me feel more like crap the next day. Even though I don't notice any jaw tension or gurning whilst on the drug, the next day my whole mouth hurts. My gums hurt, it feels like every single tooth has a toothache, and I get some head pain. Also, the first couple of times I used it, I felt completely wiped out the next day .... really tired. So although the actual consumption of ethcathinone, and the buzz, seem innocuous enough, it seems (to me at least) that my body and it simply do not get along.
In summary, not something I would get again. Still not having any luck finding 3-fa, so may have to try either 2-fa or 2-fma next.