I haven't taken 2C-D above 20mg, so I guess I don't have a true sense of how it is. I just knew I could afford only a few and given the choice of 2C-C, 2C-D, 2C-E, 2C-iP and 2C-P, I chose C, E and P. 2C-C to me is a lot like 2C-B except better, very similar sort of euphoria and body high but crisper visuals and a deeper and more useful mind state... more psychedelic, and fantastic for self-reflection, truly therapeutic, useful, euphoric, visual, great body high, virtually no bodyload/come-up discomfort. For general purpose use, it's my favorite 2C-X and one of my favorite substances. I actually find it about equipotent to 2C-B, too, personally. Maybe slightly less potent. I picked up 2 grams and have about 1 gram left, wish I had grabbed a few more because it's great stuff. And 2C-E is one of the most glorious and intense psychedelics there is. I have a gram but haven't used it yet, it's been like 8 years since I took 2C-E.