If you don't mind I am going to sneak in a additional question here:

Has anyone particular experience with Ritalin SR vs Ritalin LA? (Or anyone who has been on IR and SR and has experience to share, I'd like to hear that too).

I just noticed that SR would be way cheaper for me than LA, and as I am thinking that I need to increase and add an afternoon dose I'd like to change. Has anyone been on both and noticed any difference as to how they function/side-effects?

I've only been on the immediate release and LA and I certainly notice difference between those two. I'd like to know if changing to SR would be an unnecessary detour when (expensive) LA is working for me.