for further information, you should check out the Psychedelic Index of this forum. there you will find multiple threads on both compounds and even more...
from your post, it seems like you have little knowledge about psychedelics, do you have experience with any of them? anyway, read as much as you can and then decide if you're ready. i have no experience with either drug, but with other psychedelics, and even had a breakthrough with mushrooms, which might compare with a DMT experience. this is no toy...
they are both mindfuck if you ask that way. however dmt is far more visual than 5meo and 5meo is harder on the body and especially smoked hard to handle if you have no experience.
i'd go with snorting 5meo first in very low doses (around 5mg) and see where it leads. vaping it (even 5mg) floors you instantly with a rather an onslaught than an onset.
dose depended. since 5mg is already hardhitting it floors me for a good 15-20 minutes until "i'm in control again". i havent done vaping beyond 8mg, its just too brutal onslaughty onset. snorting however sets on easier, it still will hit hard, but be more manageable cuz it comes on gradually. also the visuals are more pronounced snorted for me (prolly because i'm not distracted by trying to keep alive).
snorting doses are about double to 3 times as high as vaped ones. so 5mg vaped are around 10-15mg snorted. also tolerance depended. the highest i snorted was 17mg after 30mg MXE (panicbuffer ) and it was awesome. i will keep it that way. vaping only in very small doses (3mg) and tiny huffs.
Otherwise, hit the index and search engine and read up about each! After you've done that, folks here would be happy to address any targeted and informed queries you may have, just post'em in the appropriate thread (assuming one exists and can be found).