Since you ask here's my personal account of it. My word doesn't hold much weight though since I'm a complete newbie, but whatever.
Me: Male, 5'11, 12stone, little experience with MDMA (had pure MDMA once, cut pills a handful of times), some experience with other MDMA-like RCs (Have probably had around BZP+TFMPP and methylone around 20 times within the past two years or so)
Friend: Male, looks around 5'6-7, 14-15 stone, has an assload of experience with MDMA, speed, and other MDMA-like substances/RCs. Went on a 5-iai and MDAI binge the night before taking benzo fury.
Ordered two pills for me and my friend from separate vendors, one was well packaged and still intact, the other was just thrown into an envelope and I guess got crushed in the posting process. Didn't weigh them though unfortunately. I bombed the crushed one and my friend crushed his intact pill and bombed his too.
15 minutes since dropping, he's feeling in a good mood, I'm feeling nothing. Half an hour later, he's lost his initial good feeling, I'm still feeling nothing. We decide to pick mushrooms and walk to the local train station. 1:10hrs or so since dropping we're at the train station, friend lost all hope in it at this point, but I think I might be starting to feel it.
~1:20hrs since dropping, we're on the train, and I have a huge smile on my face, feeling euphoric and awesome in general, gradually coming up. Friend is feeling nothing.
~1:50hrs since dropping, we're at the cow fields. It's sunny and the field looks awesome, this field was made for me. I lie on the grass with a huge grin plastered on my face, not caring that I may be rolling around in cow shit. God damn, these cows look so cuddly. I want to be their friend. I slowly walk over to them, trying not to frighten them, but they walk away

. As strange as it sounds to say, everything looks "3D" and fantastic. The feeling of euphoria is almost as strong as the time I did pure MDMA, although it's not as orgasmic where it's at the point that, say, touching a cat's fur feels orgasmic. Music is better, but not as much as it is on MDMA, but silence is boring so I had my earphone in one ear the whole time. No real stimulating effects, but walking feels nice and floaty.
At this point I'm so out of my face that I'm not thinking about what time it is or anything, but it continues like this until it started wearing off (although we left the field since there weren't any mushrooms, went home, and walked around a park for a while), around 5-6 hours since it kicked in. At some point, I'd guess around 2:10hrs since dropping, my friend had a few lines of MDAI and around 10-15 minutes later he seemed to be feeling almost as mashed as I was, and continued redosing on MDAI throughout the day, he thoroughly enjoyed it. I have a hard time believing it was the MDAI itself, I've only had it once myself but I certainly wasn't anything like he was. Maybe the mixture of 6-APB and MDAI helped.
Maybe I just got a good pill or something, the inconsistency of the reports is really strange. May report back again next time I try it, which I certainly will. Next time I'll weigh the pill(s) though.