Which -racetam improves cognition the best?

[blase deviant]

I've tried piracetam, aniracetam, oxiracetam, and pramiracetam. Only one I can't get ahold of is nefiracetam.

Which one do you feel works best to improve your cognition?

 

[ebola?]

BUMP

Mod, please consider creating a poll, excluding phenyl-piracetam (it's kinda 'special' ).

ebola