I find your post very interesting but your logic seems a bit flawed. You write "why take it when I can take a generic Adderall every 4 hours or as needed" where as most people would take the view of why do something 4 times a day when you can do it once?
Actually, there really is a more technical reason I do it. The reason I never took XR. It takes 20mg to ramp me up in the morning. A 30mg XR would release 15mg immediadtely and that's not enough to ramp me. I could have taken 2 20's, but that would have really added to the cost.
The other issue: If I had taken 2 20's, I really don't always need that 2nd 20mg I would have got 4 hours later from XR.
I just have more control using IR. It's not 100% about the money, but that is a factor considering I can optimize better using IR.
Right now, I take 30mg when I wake up, then usually a half every 4 hours, up to 90mg a day. It really just depends on my day. IR is long acting as it is, sometimes just that 30 in the morning can get me through the day.
Unfortunately, I am still hoping for something that gives me more focus. Adderall gets me out of bed, and let's me do a lot of stuff, but if I have a lot of reading to do, unfortunately I still wait until the last minute to do it, even if I find it interesting. I'm still waiting for a better drug, but Adderall been great to me for about 12 years now.
BTW, I do respond to Vyvanse, and I know you're right about the length of action. I don't know the words to describe this, let me say this: Adderall works a lot better for me that Methyphenidate. It is more motivating. I am hoping in the future for a drug that is more motivating that Adderall. Vyvanse is not it, it's not a new drug that works better in terms of how it works. Vyvanse is better like you say in terms of length of action and smoothness. I agree with that 100%, but that doesn't make the drug work better.
If I had compliance problems, I'd take Vyvanse in a second. I'm hoping you guys come up with the next drug that is just going to work better in terms of improving focus and motivation.