quick one from me here...
of these, i've tried 2ct7 and 5meodipt..
the foxy tends to be less trippy and more of an environment enhancing substance (tactile and auditory distortions/enhancements) with aphrodisiac qualities, all of which are tame enough to be used in a social setting with some experience. at higher doses (starting around 10-12mg and up) it tends to be a little more of a ride, but ive found using it at lower doses as a social/environment enhancer works quite well, not to mention cheaper.
2ct7 is absolutely great as a trip drug.. auditory hallucinations dont occur in the sense of things sounding different, but they do seem to occur at a sort of higher mental level, in that this stuff definitely without a doubt makes music sound gorgeous. no ringing in the ears, flanging (the wah-wah-wah echoing you get some some substances), or any of that, though. visually it's interesting also. the best part of it is its ability to totally (if you'll pardon the cliche) expand mental horizons. thought ideation occurs at a very rapid rate at higher doses, making for a very colorful thinking experience. i'm not sure if those just looking for "pretty colors and weird sounds" in a trip would enjoy 2ct7 all that much, though.
hope that helps.