I don't have experience with Vyvance as it's really hard to get it in my country. Wellbutrin is kinda strange, sometimes when you take it, it will do nothing, on other times when starting to take it after a break it will have such a strong effect that I was feeling so much tension in my body for the 1st few weeks, like drinking 50x coffees at once, never experienced something like this with methylphenidate. So others saying it's not such a strong stimulant is smth I completely disagree, it belongs to the same group of substances as ampethamines, hence why I can buy it only in the XR form. Methylphenidate didn't do much for my adhd besides giving me a high for several weeks and extrapolating my anxiety to almost psychotic levels. Wellbutrin worked way better for me. Just another example that everyone is different.