Why do people on here recommend older pct products on the forums Q's and A's?, when theres a new generation of products out, i see it done all the time on this board example...

Letrozole (Femara) is the chemical name of Novartis´ selective third generation Aromatase Inhibitor YET! people on here reccomend old stuff like it's predecessor Arimidex.


why not recomend pct products that are newer and 3 times more effective?