Even though they're kind of weak, or at least a hell of a lot weaker than regualar adderall on a mg-to-mg basis, I like adderall xr better than regualar adderall, and here's why: If I take Adderall to get a buzz, especially in the evening, I always stay up a full night and the next day I feel like poop (which is very common for speed). But, if I take Adderall XR, which I take more of, and then I will stay up all night, but I won't feel bad the next day because the time release has delayed the comedown. Then I sleep it off the next night. By the way, take twice as much as you would regular.
As for your question, I hear that snorting them really doesn't do much, to get them to kick in faster I pour them out into my mouth and let the beads melt as they have a yummy sweet taste.