Hello! I'm looking for a new messenger bag/briefcase for university use. I'm opting for canvas, because I truly enjoy the 'casual' look of rugged canvas and leather straps. At the moment I'm trying to choose between two options: - Filson's field bag http://www.filson.com/luggage-bags/field-bags/field-bag-medium.html#122 - Copper river's briefcase http://www.copperriverbags.com/clas...roomy-cotton-duck-toffee-brown-15-cd-br-clbr/ The important thing for me is that the bag will last for a long time - something which I assume shouldn't be a problem with any of them, considering that both have a lifetime warranty. The CRB is a bit cheaper, though not much with a Filson 10% off code, and it is a bit bigger. Does anyone have any experience with these bags, or do you recommend any other brands/bags I should look at?