I have a large classic briefcase and use it daily for work and school. If you are carrying textbooks, you definitely want to go as large as possible. I carry a laptop, 3 inch binder, and ipad in on compartment of my class brief then various smaller items (pen case, cable bag with zagg sparq, cords, mouse, and whatever else is needed). The large brief is not too big and I do not feel that if it is not loaded to the gills I am wasting the size. There are times when it is stuffed to the max and when it isn't its comforting to know I can carry anything I might need.
So it seems that either size would be okay for a 5'9 200lbs ish pound build and it just comes down to how much space needed Thanks guys
Edit: Thanks storm33 for the pictures helps a lot thanks
Edited by C3ns0rious - 9/19/12 at 12:12pm