Well a week ago me and a friend took our first dose of 25i at a very large trance event in the Netherlands and it was absolutely fantastic.
This video sets the scene quite well (hope I'm allowed to post this!), it was very large, very intense, and full of absolutely battered Dutch wreckheads:
http://www.youtube.com/watch?v=QWRqMf8w77U
We took about 2/3rds of a 1200ug complexed blotter at 00:30 and held it in our mouths for about 45 minutes. My mate managed not to swallow any saliva in that time but I had to swallow twice, my throat became extremely dry and scratchy, perhaps a throat sweet beforehand would have helped. The comeup was gradual, slight nausea but very manageable, and at the 2 hours mark we were both near peak.
On the dancefloor there were almost no visuals, I guess because of the amount of crazy shit already going off. It wasn't until we left the dancefloor for a long bright hall leading to the toilets that we really got the visuals. It was as if there was a lens in front of my entire vision and it was being warped and morphed, stretched and compressed. Faces became caricature but not to the extent where it was disturbing. In some places the floor was wet, and the muddy water would swirl around in patterns. Walking felt a bit tricky and passing through crowds didn't feel real, there was a slight feeling of detachment.
Back on the dancefloor it felt as if the world was collapsing around us then being reconstructed every time there was a breakdown in the music. The drop was the icing on the cake indicating the new world's construction was complete. I was in a constant state of being slightly startled, the lasers always looked as if I was seeing them for the first time. It felt as if our position on the dancefloor was somehow geometrically significant in relation to the room and the stage, though it wasn't. Trying to get through crowds on the dancefloor was difficult and felt quite perilous.
I didn't notice any appetite suppression and in fact became very hungry after a few hours. The stimulant effects were at just the right level, I didn't feel tired at any point and was still going strong at 5am. There was no body load and no gurning. This was a massive relief from how I tend to feel on MDMA, which, although incredible, often makes me want to just curl up and gurn my face off with my eyes in the back of my head.
It'll be no surprise to anyone that 25i doesn't feel like a bespoke club drug like MDMA, the visuals were largely wasted by the environment we were in. I would be uneasy about taking a larger dose to increase the visuals in that environment, because being in the middle of a packed crowd was quite intense. Perhaps an outdoor, daytime music festival would be more suitable, or anywhere with some natural beauty. Despite this we had a fantastic night, and 800ug felt like the right dose for a first time in a slightly risky environment.
And as we speak the world collapses around us...