If you're anything like me and expect it to be close to mephedrone you will be extremely disapointed, as it has no no music appreciation or aphrodisiac element. These were the essential aspects of mephedrone for me.
After ending up receiving 4mec instead of mephedrone several times since the ban, i have finally been able to approach 4mec with more of an open mind without expecting too much. I am now actually finding the stuff quite nice, a low key "feel good" feeling, with pleasant stimulation and background buzz on lowish doses. Theres no pint upping the doses chasing a high that isnt there, a mistake i made many times, you just end up over stimulated and jittery.