Personally, I prefer equal splits. I want to motivate my cofounders to contribute equally, but that's me. Not everybody likes it that way. My way, it takes much longer to assess cofounders properly before pulling the trigger. But I always use vesting schedules and cliffs. I made huge mistakes in the past without them, where I had such a bad divorce with a cofounder that I got ousted as the CEO by the board. Ask me about it sometime.