I've done coke a bunch of times but it was always every few months on special occaisions. Never a regular thing.

I smoked some black tar heroin once. I won't deny it was the greatest high I ever had but that in itself was a big warning signal never to do it again. I can't say so much for my friend that I smoked it with. He got hooked pretty bad, ended up losing his wife, kid, job, etc. Nobody even knows where he is now. I definitely agree with ezjim and EmpT-STAY AWAY FROM HEROIN