I actually tried 2C-D for the second time last weekend, first time was 8 years ago, 15mg did nothing notable back then, could not tell I took something. I opted for 25 mg this time around, had much more pronounced effects. Didn't actually find it all too enjoyable, come-up was almost indistinguishable from the peak, first effects after 40 minutes, slight nauseau abated by smoking some cannabis, gave me a vague bodyload for half an hour, also increased the psychedelia somewhat, but still that weird cold clarity throughout. Not exactly empathogenic at this dosage for me, some giddiness, but it kinda just annoyed me. Took an extra 10mg an hour in, it didn't do much either, just lenghtened the duration with an hour maybe, but did not add to the strength of the experience.
Dissapointed considering I can feel 2-3 mg of 2C-I with no problem, assumed it'd be the same for 2C-D as well.