I personally also have found that the generic version of ADHD meds haven't worked as well for me. What I've done is had my psychiatrist check the little box at the bottom of the prescription that says "do not substitute". This requires the pharmacy to fill it with the brand name drug. I did have an issue at the beginning because my insurance would not cover the brand name if there was a generic alternative on the market (I had this issue with Focalin when it became generic). I had my psychiatrist write an appeal to my insurance company (essentially write a letter explaining that after trying the generic, I found it to not be as beneficial as the brand name, and to please cover the brand name). He also supplied them with my medication history to show that I had been taking the brand name, with success, for years prior to the release of the generic. Fortunately, the insurance company accepted the appeal and now covers the brand name drug for me. It might be worth a shot if you think that you would like to go back on ADD meds and would prefer the brand name.

Also, I know that Wellbutrin is sometimes used for ADD. My psychiatrist considered it for me when I was deciding whether to go the non-stimulant route after having little success with Straterra. He said that it might help reduce some of the inattention but not really with focus. I'm not sure if it would be much help but since you're already taking it, it might also be worth talking to your psychiatrist about upping that dosage just to see if it helps.