Jason is the only investor I've worked with that treated me simply as a founder, not a "female founder." This alone is a reason that new YC entrepreneurs should have access to working with him. He sets an example of how entrepreneurs should be treated.
Jason has seen me at my worst, when I was ready to throw in the towel and battling with my board and generally having a tough, tough time, and I left the meeting with hom feeling like a rockstar, that I COULD handle it, and could go on to succeed (which I am doing today).
He is such a founder advocate I would take $25k from Jason over $250k from a bigger VC, because when the going gets tough (and it will) Jason will ALWAYS have your back.