Well its a bit hard to tell if if there was that much difference since its been about 8 months since my last trials with 2c-d+M1, and over a year since 2c-d+M1+MDAI. I do think that there was less body load with 2c-c in this application as opposed to 2c-d though, and i think the visuals persisted a bit more as well. This is somewhat fouled up by the relatively small amount of 2c-d involved, but the trip, before i took the M1+MDAI capsule, felt like a ~60mg 2c-c trip, the 2c-d didn't seem to shine through at all.
Don't think it was quite as profound as some of my MDMA+LSD experiences, but still an ecstatic ++++ (i was at a concert

). I've tried a few things attempting to elicit a candyflip type experience. Not really looking for a precise mimic, but similar things. This was certainly similar, and depending on what you're looking for, was in some ways better, and in some ways not as good. I did not feel as confused & disoriented as i have on LSD+MDMA, and was certainly more capable of interacting with others.
Out of the various psychedelic/empathogen combos i've tried this was certainly near the top. Excluding LSD+MDMA, i'd give this ranking thus far:
2c-c+2c-d+M1+MDAI>4-AcO-DMT+MDAI+Buphedrone>2c-d+M1>2c-e+M1+MDAI.
YMMV of course though, as combinations have much more interpersonal variability than these substances alone.