Magic Truffles contain psilocybin, the psycho active substance that makes you trip at high doses. They also contain a number of other alkaloids that together cause an entourage effect. Some truffles contain slightly more psilocybin than others.
It doesn't matter which truffle you take for which motive. To achieve the same effect, you need to take a certain dose.
Psilocybe Mexicana (XP)= mild
Psilocybe Atlantis =strong
Psilocybe Hollandia=most strong
So for the mexicana, you need to take slightly more than the Hollandia, but that's the only difference.
However, the Mexicana XP truffles are the most convenient to take because they are already pre-packaged in microdose portions.
The Hollandia and Atlantis, you will have to process by drying them, because after opening, the truffles only have a shelf life of 6 to 10 days.