I have always felt like I love smaller bags. But I have a few of them and they do not work for me. When I use my Bayswater and my Sukey I feel like that the perfect size. But - which speedy size is that equal to? A 30 or 35? Typically the measurements of the others I like are 13/14 x 9/10 inches. The depth is usually 3-5 inches. Thoughts?