The safety profile of amphetamines are not anywhere near as good as Strattera, so if that's why you are avoiding it, you should reconsider. Vyvanse can cause heart issues, liver issues, and kidney issues (and rarely lung issues). If amphetamines didn't have serious side effects, we'd let everyone use them :)

I took amphetamines for 10 years, and Strattera for 15 years. Straterra was much more consistent in efficacy, and it never stopped working for me - almost all amphetamines stopped working after a few years, and i would have to change them.