Ritalin was the best for me personally. I was Punjab at the time, and my cousin own a pharmacy there, and I started getting that stuff off him, it was almost identical to coke, in fact it was better since the effects lasted longer, and the come-down was non-existent. With coke you get an intense high and a rapid comedown, which is not good, with Ritalin you get a rapid high and a slow gradually tapering off effect.
You have too much dopamine activity in your brain dear Tut.. you need some benzodiazepines ...something like Olanzapine