500 primates vs. 500,000 humans, which side would you chose?

500 primates or 500,000 humans, which side would you lean on? All the talk of animals rights (mostly just animals humans find to their liking) how far would you go to preserve the rights of animals? Primates are said to have 93% +/- shared DNA to humans so logically using them to test out product, procedures, and medicines that would eventually be used for humans on them 1st. Why risk harm to humans when there seem to be an ample stand-in? Also quite plausible would be that last un-similar 7% =/- DNA would render them as poor test subjects because that little patch of dissimilar DNA could throw off the test, give false readings. With that would you risk using 500 primates for testing if that leads to the cure or wellbeing of 500,000 humans? Or is one primate too much to spare to save even on human? If not even one primate should be lost or suffer so that no human has to should the test be forced upon or offered to prisoners facing life as incentive to maybe getting parole one day? In short, would you be willing to sacrifice murderers, serial sex offenders, drug king pins, terrorist, etc. for the benefit of mankind and to save primates that none of them ever suffer?