Experiences with Reaserch Chemicals?

I've recently came across and ordered some reaserch chemicals, because I was very curious, found a reputible source as well. They haven't arrived yet but I will be very curious to use them for "reaserch" purposes only ehm...

Anyways, I was wondering if any of you guys tried any and which one was your favorite. I think they might be safer to do then the street versions of similar substances due to their purity and adeuqate dosing, however the scientific studies on them are extremely limited, so it might be more dangerous in that way, that we don't know the risks necesarilly.

I've got some 2-FA (amphetamine variant), Pyrazolam and 6-APB, I'm really curious on what they will do, I've read some interesting things.