Hey welcome to the board.
Your choices as far as treatment are not just medications. In fact natural supplements have recently proved themselves to be just as helpful as medication in treating this disorder (though no doctors will tell you that) There is also a treatment called biofeedback which is usually very successful for teens and young adults with ADD. I always like to say, medication should only be used when necessary after all other safer treatments have been tried but not been sufficiant enough to deal with the problem.
beCalmd is a great supplement. It is safe. I took it for a long time and had better results than I did with medication that I was on for years when I was younger. It just got a bit expensive or I would still be taking it.
As far as deciding between adderall or stratterra. Well, adderall is a stimulant (amphetamine) Is there a history of drug addiction in your family?
Strattera is still fairly new, it is a non-stimulant. For some it has worked wonders.
Please consider ALL of your options and see if you can find a safe alternative before trying medication. Medications should only be used when it is absolutley necessary and a person needs it to function in day to day life.