I purchased the Ortlieb rear folder panniers because I live in lots of rain. They are waterproof and the attachment system is VERY nice! I was going to get the REI Transfer panniers but didn't want to deal with the rain cover wearing out. The problem with the Ortliebs is that there are only two pockets on the inside. I am a student as well, and one pocket will hold two folders and the other pocket pens, lights, and Clif bars. Everything else just goes in the big area. They are really roomy and I am quite pleased with them. The salesman at my local bike shop showed me the ones on his bike that he has had for three years, and they appear to hold up well. With a five-year warranty and German built, I think I will be quite pleased with them. I usually just take one to school and haul it with me, but for shopping, I use both.