Including nootropics, substituted amphetamines, alkaloids, etc.
In terms of effectiveness:
lisdexamfetamine > dextroamphetamine > methamphetamine > amphetamine
This hierarchy also seems to represent price. Ultimately, you pay more for quality.
Thoughts on lesser known alternatives or combinations? Caffeine has lost its luster.
Edit: words.
Adderall. It's tried. It's true. It's most likely the one for you!