Considering switching to vyvanse

I’m currently on the generic Adderall 20mg IR and it only really kicks in to the point where I feel like I can accomplish anything for maybe a good 1-2 hours. After that it dies down. I’ve read on Vyvanse and I know it’s different for everyone else but my doctor is going to put me on Ritilan for 2 weeks just to see how it is. If anyone’s been on either Ritilan or Vyvanse what are some of the good and bad things about them?