I have tried five different NBOMe's so far: 25c, 25b, 25i, 25n and 25d. I feel I need to push 25n further to really appreciate their effects. I will edit this post accordingly once I have done this.
I'm toying with a hypothesis that the alkylated NBOMe's (d, e & p) might differ from halogenated NBOMe's (c, b & i) in that they are significantly more introverted and insightful but less recreational and empathic. It seems that this might be true of the 2c series too although I have only tasted i, b, c and e. Sulgin's extended commentary in the PiHKAL entry for 2c-e might possibly back this up. I would want to have experienced 2c-d, 25e-NBOMe and possibly the propyl substitution of each series before being confident in this conclusion.
Although 25d has a deeply psychedelic nature, it doesn't display much of interest at lower dosage levels (Shulgin's discription of "pharmacological tofu" in his 2c-d PiHKAL entry springs to mind). This isn't necessarily a bad thing. The same can be said of a lowish dose (50-70µg) of LSD compared to a lowish dose (10-12mg) of 2c-b. I assume that the visuals kick in at higher doses because they certainly aren't present at 600-800µg intransally. It's strongly stimulating, emotionally benign similar to 2c-e but doesn't have the recreational "fireworks" of 2c-b or 25c-NBOMe.
Edit: I have now pushed 25d further and it turns out my high-dose hypothesis was correct. At 2-3µg it shines, substituting the fun and games of the halogenated NBOMe's for a more serious, insightful and psychologically useful state. It is also the most visual NBOMe experience I have had (WARNING: do not start with such a high dose - work your way up or chance serious consequences). I will be editing the dosage and activity details below to reflect my new findings.
25i definitely has similarities to 2c-i (good humour for instance) but lacks the gastrointestinal disturbances of the latter. There is a significant orgasmic body high with this material which makes it good for sex. Visuals are more acid-like in the sense that objects morph rather than getting covered in patterns. Overall, more interesting than 2c-i, like an improved version.
Edit: just took 25i with my girlfriend. It wasn't as sex enhancing as I expected. The tactile was really good but sustaining an erection over the course of a long period of foreplay was impossible. That certainly wasn't true on the one occasion I had sex on 2c-i!
25c - visuals are more mescaline-like than 25i with sparks of light and rainbows radiating from objects. The most entactogen-like emotional warmth out of all with the possible exception of 25n but also maybe less insightful than some of the others. Extremely good humoured. Feels very safe to push into high dosage realms. This one is the best of the three halogens for party fun.
25b is really visual and unlike other reports, I didn't get a touch of body load from it even though i did a pretty high dose. The visual effects seem to contain the best of both 25i and 25c with true OEV's and CEV's but I got very little insight from this compound. Bizarrely it is the only PEA I have ever taken where there was absolutely no jaw-clench. 25b dosage is somewhere between 25c and 25i. It doesn't feel as much like 2c-b as 25i feels like 2c-i. One thing that should be noted here is that some of the dosage recommendations knocking about online are suggesting taking double the appropriate dose. This is due to some vendor supplying a 50% pure product in the early days of the compound's availability.
LINK TO TRIP REPORT
25n is a work in progress for me. I need to push it higher to see where it takes me. I found a little gastrointestinal load and nausea but nothing hard to handle at 450ug buccal. There was only minor jaw clench and a lovely skin feeling. It's probably more easy in terms of emotional communication than 25c but less loved-up. Maybe a good therapy drug or maybe good for sex? I will have to try. The energy seemed very relaxed and non pushy compared to the others, a bit like the cozy-up-in-bed thing of 2c-c.
LINK TO TRIP REPORT
Most of the NBOMe's have very little mindfuck compared to LSD and psylocybin mushrooms. This is a good and bad thing. You could probably have tea with your grandma on these but for the same reason they can lack the psychedelic state where everything is infused with meaning. Upping dosage can obviously provide a (possibly partial, maybe full) remedy for this but I wouldn't suggest exceeding 4 times the starting dosages listed below as this is starting to approach seizure territory. 25d provides more of this "psychedelic ideation" than the others but in a non-mindfucky way - in fact it might be described as my personal holy grail as far as psychedelics go; infused with meaning yet low risk of anxiety, confusion and paranoia. In my experience, these aspects usually come as a package (IE. the more meaningful experiences the compound produces, the higher it's risk of providing a bad trip).
Starting dosages for each compound. Use these to judge the relative dosage levels between compounds (IE. if you know that 1mg 25i-NBOMe is the sweet spot for you, divide 1000 by 600 and then multiply the result by 350 to find the suggested dosage for 25c-NBOMe):
25b - 500µg
25n - 500µg
25c - 350µg
25d - 950µg
25i - 600µg
Below is a subjective ranking of the sampled compounds based on some arbitry categories. (Note that these opinions are really personal and subject to change as I continue my NBOMe research):
Psychedelic ideation 25d > 25b > 25i > 25c > 25n
Visual activity 25d (high dose) > 25b > 25c > 25i > 25d (low dose) > 25n
Worthwhile at low dosages 25n => 25c > 25i > 25d (I have only taken a high dose of 25b)
Tactile stimulation 25n? > 25i > 25c > 25b > 25d
Mood enhancement 25c > 25n > 25i > 25b > 25d
Euphoria 25c > 25d (high dose) > 25b > 25i > 25n? > 25d (low dose)
body load 25n? >25d (in terms of stimulation but not GI) > 25i > 25c > 25b
Duration of action 25b > 25n > 25i > 25c > 25d
(the above was edited to in light of new findings)
