I've got a lot of experience with stims. I've been on all of them. vyvanse is by far the most mellow, everything else made me manic as hell. I'm currently on 40mg of vyvanse, with an extra 20mg as needed. if you cant handle vyvanse I wouldn't do stims at all. everything else is much harder, Ritalin made me psychotic, and concerta made me angry, adderall (ir or xr) made me angry. I can handle the vyvanse though, its the only thing that works for me.