I've never had Adderal, only Dexedrine and Ritalin.  
Dexedrine is pure, clean, gentle on the head but seems to carry a light body load mainly focused on stayng hydrated.   If I didn't pound water my kidneys hurt. 
Ritalin is poison.  Taking the smallest does, 5 mg, had me splotchy red and rapid cycling like I was bipolar, accompanied by mildly impaired cognition.  Apparently that's how it affects most adults who didn't take it as a kid.  The way it affects most kids is to turn them into zombies.  Disgusting substance.