I was reading up about Xylene and Limonene as good full-spectrum solvents, and naptha and heptane as good "pure" dmt solvents, but I was wondering what the ultimate difference is between any of them?

If I pull with Xylene instead of Limonene, will I eventually get the same amount of DMT (full-spectrum or otherwise) after 100 pulls (hypothetically speaking of course, I wouldn't do that)?

Will I likely lose significant product by pulling full-spectrum with xy/li and then trying to convert to freebase and then re-extracting to get a separate, purer product?

Is there any list of solvents that describe total pulling effects? I'm considering the toxicity issues as well, but after reading about how there are a lot of successful ways to pull DMT, I was just hoping to get the most out of the bark, regardless of what methods that might require (other than the really expensive ones!).

Of the ones you mention, Xylene is best, with limo a close second. I've found they are about the same, except limo doesn't seem to separate from water quite as well, it will get cloudy and never clear up. Xylene is more "reusable" for multiple pulls, but it's so cheap it isn't worth the bother. Maybe that is part of the reason I prefer xylene, because I try to use the limo as efficiently as possible due to cost.

I prefer to extract the full spectrum and clean up after, it seems like I get the most out of it that way. FASA in xylene has given me the best yields straight to fumarates, but if you're planning to convert to freebase anyway, vinegar or HCL in water washes will work just as well. After basing that, a heptane or naptha re-x will clean it up plenty enough.