I want a bag that is fitting, not one that sags near my butt. I've been looking around on amazon and have narrowed it down to these choices based on design. http://www.amazon.com/Port-Company-Honeycomb-Sling-BG101/dp/B0056X5S2Q/ref=pd_sbs_a_5 http://www.amazon.com/ful-Unisex-Adult-Peabody-Sling/dp/B003V1XDWC/ref=pd_sbs_a_7 http://www.amazon.com/Mercury-Executive-Sling-Bag/dp/B001E6OXI4/ref=pd_sbs_sg_8 I'm just worried that a the MBA may be too long. I also want to carry around a small binder. What do you guys think?