Let me start out by saying that I have only done cocaine about 8 times from probably 4 different sources. I did a few tiny bumps from the stuff that this Colombian co-worker of mine sold, and I was flying off that little bit. I bought a gram from him once, and it lasted me 3 days before I dumped out the rest since I was sick of it, and that was the only way I was going to stop.
A few months later I was at the bar with my friend and he said he had some blow that we could do. Full lines of this stuff didn't even get me as high as little bumps from the other dude. This has been my experience with every source other than the Colombian. The last time I did any coke was in June I believe, and it was pretty shitty.
I should mention that the Colombian guy didn't cut the coke before he sold it, and he has done coke everyday since 1985 (I shit you not). He's the craziest person I have ever met, and his nostrils are like the size of nickels. He lives a simple life for the most part, and uses his earnings to buy real estate, so he has a retirement package I guess. Like he buys houses and rents them out to multiple families, and although he is a coke head, he just does little bumps all day, and only really parties hard on the 1 night a week that he didn't have work the morning after. His actions aren't as crazy as his thoughts and words, which I guess is how he has evaded being arrested other than a DWI from a while back when he owned a club.