The large, likely in a neutral beige. I'm not sure when, just keeping an open mind. Sometimes that size and the Maxi look really saggy in pictures, and I'm loving the less structured look of the 19, but only to a point. What I love about the small is that it looks relaxed, but not like it has no structure.
Additionally, I find that I don't really care for Chanel bags with the CC lock in larger sizes. They look too, "Hey look at me!" to me. Even carrying my small 19 feels quite different than carrying my small Classic flap. I'm a little more self-conscious. But that's just me.
So, no rush to purchase for now.