I better add my experiences with these ones. I haven't seen any reports of the dose and/or negative physical I encountered. This was over 3 years ago, before the RC vendor busts. I know I had 4-aco-dipt, though at a later time 4-ho-dipt may have been sampled. At doses 20-25mg, mostly giddiness, jitters of the thighs, minor visual affect/fluidity.
Laughing comes too easy, which both made it hard to un-tense the smile muscles (thus the name for this compound "smileys"), and for some fellow experimenters, paranoia (weirded out by drug-induced permagrin).
At 60mg (again, pretty sure it was 4-aco-dipt, but something is telling me it may have been the 4-ho variety), an uncomfortable, almost painful spasm of one of the muscles inside the ear. I have recently found this to be the "acoustic reflex", responsible for closing the ear when sounds get too loud, or when chewing; during the trip this was manifested as a whooshing sound and muscle twicting feeling [in the ear], this also sometimes occurs naturally in response to really bright lights or yawning, and as a "reflex" it felt like wincing during the trip, from excesses of audio that didn't exist, but felt that way to my ears, anyway.
After an hour of uncomfortable, frequent "ear thing" reflexes (once every five seconds at most), this effect subsided and I was left to enjoy very complex CEVs, much like what was experienced on a lower dose of miprocin. One notable aspect of these CEVs was the patterns being of translucent colors, with blinding white light shining through like sun through stained-glass, alternating between very brilliant white light and colored RGB or CMY. This was quite remarkable and one of my more memorable "eye candy" experiences.