I find that 60-70mg of adderall kinda feels like doing a line of coke that lasts 12 hours, but better cuz its smoother and less jittery. i would just go into this pleasure zone for long stretchs of time, i wouls just concentrate and have this crazy euphoria passing over me for hours on end. after like 5 hours i might take a boost dose of another 10mg, and this would shoot me into the clouds. i would recommend seeing how 40mg of adderall makes you feel first. A word of caution about adderall, and i know one other person this has happened too....
i no longer do it, i inject opiates now, which is not as euphoric ( maybe it is actually just in a different way, i actually hate uppers after what im about to describe happened). I did Adderall about 20 times when i 16. The last time i did i took my usual dose of 70 or 80mgs. i noticed that my face look kinda funny. i had moved my mouth and jaw so much that i dislocated my jaw, and i actually had to get bracesfor a 2nd time for a few months, and get my jaw reset. no one else noticed, but the dentist said it could get worse over time. it really affected my self esteem the 4 months before it was fixed. like i said, very small jaw shift, but i noticed it, and it bothered me a TON