In my experience overall the most fucked up RC (personally) has been 5-MeO-DMT, having never tried actual DMT I can't compare it but I know quite a few people in my circle of friends that had it and they all described it as extremily intense. I have seen a buddy's eyes rolling and going white after a large hit of this stuff, 10mg-20mg. For me I never got visuals from it in the way other tryptamines or psychedelics have given me rather it was like my eyes were covered by this crazy darkness of psychedelia and it was so much and so quick (by the time you exhale your fucked) that the psychedelia provided by it rarely gave me anything insightful or anything to write home about. I have always gotten a very nice euphoric, sedating endorphin high at the end of EVERY session of 5-MeO-DMT, akin to about 25mg-35mg oxycodone for an additional 30min-1hr afterwards. I have know people comine this stuff with crack cocaine smoking it at the same time which I cannot even comprehand what it would be like, as on it's own 5-MeO-DMT is pure dementia (along the lines of Saliva).
Psychedelic wise however I would say that a larger than recomened dose of 4-ho-mipt (by that I mean without exagerating, and having weighted it myself various times over the course of that night, as much as 60-70mg, not all at once however over the course of about 8-9 hours, I kept upping the dosage by 10-15mg every hour or two).
What happend was a beautiful trip like no other full of amazing open and closed eye visuals and very much as it was described by others, an amazing ability to have control over your visuals and direct them where and however you want to. I have seen the most incredible visuals in amazingly crystal clear definition and I have tried many psychedelics including candyflips of very good LSD & MDMA.
However this drug for example I have the Bob Marlet poster of him with a spliff that is made up of Bob's face, hand and joint from a million other little squares of various pictures from Bob Marley and the Wailers. In these little squares I could see cities being built, elephants roaming around the street carring villagers to the market and to this day I am convinced there is something written (hidden) right at the botttom of the poster which I cannot make out. I started at that poster for 3-4hrs and that isn't really anything to laugh about.
Also as many people have noticed with 4-ho-mipt, there is a tendency towards the psychedelic effects turining in the direction of delieriant effects (maybe this is due to increasage of dose but I'm not certain, some report this even in normal doses). I experienced this big time at the tail end of my trip that night. For those of you who don't know what a delerient effect is like, it's the equivalent of 10-12 Benadryls/Gravols or whatever they're called in the States. Belladona as well as other various natural growing plants contain high levels of these chemicals which act on the same receptors high or slightly higher than recomended doses of Benadryl or Gravol act on.
For those of you that have had this happent to you, as you may know when taking 3-5 Gravols or Benadryls and smoking weed there are definate hallucinations (auditory and visual) some as extreme to the point where you can see far away people and be concinved they are there and when you finally realize they aren't there you are not shocked at all. When you increase the dose even further the visual aspect becomes very much repeated and very extreme as in you can see and many times 9/10 you will see and even talk or at least say hello to various people of various races and colours that will appear beside you wherever you are with their babies or alone cracking jokes and variour other tactics until you become clinically psychotic that is unable to distinguish hallucination from reality and also not caring and not finding out of the ordinary what had just taken place.
On the tail end I though it was okay but visuals kept repeating and like on high doses of Gravol i wasn't concerend that I kept hearing and seeing cars pull up on my driveway over and over and over and over for about half hour and when trying to look away the visuals would amplify even more to that very detailed precise very small microscopic level and the repetitions in the visuals would be constant. After a while it was no longer euphorc and became a bit like a mental torture since I had no heroin or weed I stopped it (very hard) with clonazepam and clonidine which i get prescribed. I think i needed about 3 times the normal dose of clonazepam (i take 4mg a day) for the crazyines to stop and even then I only slept for 2hrs after staying up more than 43-45hrs.
Peace