Genocides: What is your favoured approach?

It seems that for many of our honorable member not all genocides are created equal.

If so do you assess them quantively or qualitatively?

Do you find ones preferrable to others based on the number of victims? Does its demographics (I'm talking age/sex distribution, don't get too worked up yet) affect your valuation? Which is you less hateful one? Which ones would make your top ten and how would you rank them.

C'mon, usual suspects, release you inner sociopath. You know you want to.