What is the best pill to take if you have polycystic ovary syndrome?

It depends. It depends on your goal - pregnancy vs non- pregnancy. If pregnancy, most common treatments are Letrozole or clomid (clomiphene). If not pregnancy, some women do well with diet/exercise/weight loss while some need oral contraceptive pills +/- metformin. Some take spironolactone. New option: pregnitude.