dexedrine ex or ir which do you prefer?

[sarahsweets]

I am prescribed both however sometimes I notice the spansules kick right in(chewed) and other times I need that boost of the ir's to get moving. I also notice that sometimes the ir seems to last longer then the spansules which makes no sense to me. I am prescribed 15mg of spansules in the morning and 10mg of the ir at noon if that helps.