For any given day I have a choice of 70mg Ritalin (as three evenly spaced doses), or 70mg Vyvanse. They're differentiated by my response. Which I take depends on what working pattern I intend for that day. Vyvanse if I want to focus on a single task (especially coding or writing), or for social days; Ritalin when planning to churn through a to-do list or have a bunch of calls/meetings.
Disclaimer: this is personal anecdote, not a recommendation.
Disclaimer: this is personal anecdote, not a recommendation.