Methylone is a weird one. I get two different highs from it, under 300mg is a weird trip that makes me gurn and dance like crazy with lots of energy, and over 300mg feels like an MDMA roll without the gurning and somewhat less energy. I personally prefer it to MDMA as I've taken it weekly with little to no after effects. I've went through 2 grams by doing 200mg-300mg a week and I came out fine with no effects that lasted for over 2 days, I'm not saying repeat that or anything, but it is one of the safer chemicals. The only downside though is the duration. The trip gets stronger and stronger until around an hour and a half, then it the high just dissapears. Don't redose though, you won't reach half the point you were at with a double dose. I find it's an at home drug, you can just hang out, parachute 300mg, and just experiment with the effects of it however you want.
It is definitely safer than MDMA though. I feel much worse after taking a good MDMA dose than a good M1 dose.