Go ahead and boot some desoxyn and talk to me about the difference later. Adderal is a pretty damn good amphetamine but it won't do the crank/desoxyn trick.
Meth is quite different, perhaps because it's primary method of ingestion is being smoked (Ice). I know speed freaks who were pill people, and they don't even SLIGHTLY compare to the meth (smoker) crowd.
Even in my worst cocaine addiction I still knew better than to EVER do meth. That stuff simply crumples you up and throws you away.