I have the same dilemna, to get a Keepall 45 or 50. I want to be able to throw in a light sweater, a couple of magazines and a hardcover book and still have room to scrounge around for things inside it.
This pic is from our tPF's own blog store Bag That Style. Kanye West has the Keepall 55 I believe... would the Keepall 45 afford that same type of sag like a fortune cookie fold, or would the length be too short for that effect?