UPDATE! Since upping my explored list of arylcyclohexylamines to 5 compounds, I have a bit more of a basis of comparison. Here's my thoughts on each one in order of trying them:
Ketamine: Great, wish it was more potent though. Definitely the baseline for the dissociative experience and a good thing to compare other substances to. Even though it's so short and weak, I still get lots of trouble sleeping on it and I very compulsively redose this stuff (usually doesn't last very long in my possession, and I can go through quite a bit in a night especially if I'm not thinking about it)
FXE: SUPER GREAT! Pleasant, practical potency and duration, not too strong or long-lasting but definitely not too weak and it does have some legs. I found it to be really nice in terms of visuals, headspace, and euphoria -- it kind of felt like I was tripping and on ketamine, or something, but without the synergistic confusion that they both would bring. It was more just like layering the experiences on top of one another. I really miss this stuff, its probably my favorite overall just because it's not caustic and its a bit better suited to holing than some of the recent ones I have tried.
2-FDCK: Pretty nice, I found it to be a little weaker than K overall but basically the same. I do appreciate that there's the option to dose orally because sometimes I get so frustrated with how short ketamine's effects last, but in terms of character I dont think this substance has much. Feels very plain I suppose, though its ultimately not much different than ketamine, the fact its a completely different substance and the fact I'm trying to "compare it to ketamine" as a baseline makes me feel like it's plain when in reality I have probably the exact same feelings no matter which thing I'm doing. It's a bit more expensive per g where I'm at though so I'll just say I prefer ketamine to this one, for some reason I find it to be very satisfying to go through the whole ritual of grinding and snorting, so just popping a capsule is a bit underwhelming to my brain.
MXPCP: This stuff I tried with 2-FXiPr so I don't have a very good sense of their individual profiles, but I do have SOME gauge of either one individually. MXPCP is definitely the harshest and grossest chemical I have tried, it tastes/smells like an old mildewy towel and is more caustic, to a degree thats especially noticeable the days after using. Plus, the drip will actually irritate your skin if it drips down onto your lips/mouth. HOWEVER, I thought this stuff was awesome in how strong it is and how it lasts a good couple of hours! It's got a weird headspace too, definitely hard to pinpoint but it feels more "out there" than the other more ketamine-like dissos. It also has a sort of stimulating edge to it, but not significantly to impede with the dissociation, it more just prevents you from holing. I like holing, personally, though I'm really bad at actually getting there, so idk I kinda think thats a bad aspect of this substance but it doesnt really matter. If you do a lot you sort of go into an ambien-like haze where you're doing things sort of on autopilot, but without any of the physical capabilities to do those things successfully. The only bad thing I noticed was that I at some point redosed a decent amount of the MXPCP I had left in my bag and went through it way faster than I intended to. Not as bad with conscious redosing, I definitely felt wary about this stuff having a bit more intense effects on the body and a smaller ideal dose range, but its something to watch out for if you get too high to think straight.
2-FXiPr: The 2-FXiPr was much more pleasant on the nose, less harsh, but definitely a lot less strong. It also has a sort of "wacky" headspace, but I honestly couldn't get as much of a feel of this one. Blended in very nicely to the MXPCP though and I would definitely repeat the experience, it was one of the most intense disso trips of my life mixing the two. If I were to describe it I would say it reminded me of 2-FDCK in terms of what it smells/tastes like and how it is to ingest, but with a noticeable character in its headspace and effects. Just a bit more "fun" if that makes sense. Because it's weaker and more like ketamine, I found it impossible to save for later and I basically used up the whole half gram the same night I got it.