I tried some last weekend. It was only 16 mg so I didn't get all that high. I mixed it with a little water and it tasted pretty bad. Surprisingly strong taste for such a small amount of material. There was low grade gastro discomfort through the whole thing, which made it unenjoyable for me. Maybe a higher dose would have been better, I don't know. I'd say about 20 would probably be good. After trying both 2C-E and 2C-I, I don't think I can tolerate the general sick feeling I get from them. Just doesn't seem to be worth it. It was always steady, start to finish. Just never did let up.
That's why I have decided to move on to the NBOMe versions of the 2C-X compounds. They have virtually no nausea or other unpleasant body load effects, from what I've read. That's exactly what I'm looking for, the visuals and euphoria without the constant body load of the 2C-X's. They make me feel like I've been poisoned and my body has to fight them off. Doesn't make for a fun time. I just got 25 mg of 25C-NBOMe. That's enough for at least 50 solid doses. It's incredibly potent, almost like LSD. 500 mcg is plenty. I can't try it until the weekend but I'll make a thread to report what it's like.
If you have a strong stomach then try the 2C-I. Otherwise let somebody else try it, I guess. It's about like mushrooms nausea wise. Most people do say they like 2C-I so maybe it was just me. If you're going to take it, I would split the 40 mg in two and take 20 mg.