I've got a mixed batch of 25I-NBOMe/25B-NBOH right now and it's truly something else. I've used them both separately before, I've used 25C-NBOMe, and now 25E-NBOH, and I really don't know which one I prefer, all three are so different. All three noticeably resemble phenethylamines (DOM, 2C-B, mescaline, MDA, etc) in many ways, it's like if meth and acid had a little cousin who understood the importance of brevity. Honestly though, I wish they lasted far longer, I can get 3-4 days out of a monstrous dose of DOM, but a friend of mine who took an estimated 7-8.5mg of 25C-NBOMe still only tripped meaningfully for a few hours before it was just aftereffects, from what I recall. When I was taking 5-6mg doses of it, I never had more than a 6 hour experience, and I'm a specifically slow metabolizer of virtually all drugs. 25B-NBOH felt like if 3 copies of 2C-B all stood on each others' shoulders under a trench coat and tried to convince me that they're acid, but then they drove down the highway at 130+ mph and I asked to get out of the car and just took an Uber home. Damn that shit was speedy, probably the most out of all the NBXX's I've used so far and that's saying something. It's a psychedelic that makes me hesitate to call it one, because I almost feel like it belongs more in the empathogen category, closer to MDA. 25I-NBOMe feels like a crazed, ancient wizard is playing some sort of trick on me. The visuals and headspace are super interesting, unique and useful in my opinion. I'm not sure why I find more therapeutic potential in these drugs than others online, but everyone around me finds them super useful for therapeutic applications in real life which I find interesting.
25C-NBOMe was the first that I came across and to this day it's an all time favorite. Inducing a 3 week tolerance sucks though, and while 25C/I-NBOMe have, B/E-NBOH have not so far, those have only a 2 week tolerance. 25E-NBOH and 25C-NBOMe really resemble one another in my opinion, both are intense, highly stimulating (less than 25B-NBOH though), they possess a great headspace that can go deep if it wants to, and both are impeccable vibe setters in my opinion. I've only lightly explored the 25E-NBOH so far, I need to pick up another box mod tank for it, 5mg/mL juice and a nasal sprayer at 200-250ug per spray are likely what I'm aiming at with it. It felt like 25E-NBOH was an ancient deity inscribing messages I simply can not read into the walls around me, every line bent into a symbol that might mean something to somebody else, but to me it looked like when someone tries to write in Chinese when they're too intoxicated. Redosing NBXX's is quite fun, but it's almost certainly a toxicity amplifier, I would imagine. I've also combined 25C-NBOMe with MDA once (and I think bromazolam?), I specifically want to mix them with LSD, mushrooms, metocin, ethocin, and they've always responded well to any arylcyclohexylamine I threw at them. 25C-NBOMe and 25I-NBOMe really enjoy being in the presence of 3-MeO-PCP and 3-HO-PCP in my experience.
Sorry for the rant on these, I figured I'd leave a record of some of my experience with these compounds on this thread for future readers.