I've had a few hours of great rushes and feeling pretty amazing on M1 from doing 500mg in 2 doses but the crash and wiredness and stuff just doesn't make it hugely tempting. I literally HAVE to get away from people when I come down, and i get grumpy and tired the next few days. Threw a mild-mannered flat-mate's cheesegrater at the wall on the comedown.... :D
All the M1 i've seen is actually methylone btw, the batches are very consistent, i've tested lots of them and straight to dark/bright yellow. I am quite wary about getting given mephedrone instead because of how it affected me...