a buddy and i bought a pound of leaf and stem about a year ago and managed to isolate a ridiculous amount of very pure crystal. of course there was some plant matter in it, but it was almost negligible.
i railed two "standard" lines of it, and i tell you, never in my life have i been <i>THAT</i> high from THC. my face fell asleep (like when you fall asleep on your arm and it feels like pins and needles, except this was my jaw, chin, cheeks and forehead.), and i was just fucking RIPPED.
the weird thing was that it only lasted for about five minutes, then just as quick as i had come up, i was baseline sober.
i suggest this to anyone who can get that much crystal together.