Better Life Bags

Has anyone used a Better Life Bag as a diaper bag? If so which bag did you use? I've heard so many good things about this company and the quality of the bags but I'm kind of torn as to which bag I want and which bag would best work as a diaper bag. My biggest thing is not being able to see/touch to judge exactly how big the bags are. I don't want to lug around a huge bag but I also am planning on being able to throw my wallet and essentials in the diaper bag so I don't have to carry a purse too. The three bags I'm considering are The Molly, The Chloe, and The Emily.