It's so strange, that no one who is selling it, will even say what it is. Every other RC, they tell you exactly what it is. As far as good and bad, that is in the eye of the beholder. You can look at sert, Dat ratios, inward facing outward facing transporter inhibihitionm you can look at a million measurements, but there is no acoulting for taste. Just today I noticed BPZ has a sert/dat ratio very close to cocaine, and I thought, "hmmm, I might like that!" but then I read it is a hallucinogen, and I definiety wouldn't like that. I've been thinking about a-pvp but the ratio is off the chart! pure dat, no euphoria I guess. So,speculating on how you like a drug by reading about idt is hard to do. I like smoking crack. I'm not against meth either but it doesn't have euphria like crack. I'm almost the only person I know who has kept it up for a while without stealing, lieing and beoming sa total piece of shit. My frontal cortex has a serious isnjury. Maybe that's why.