I've seen a lot of people saying that they wish they had bought Ortlieb panniers in the first place. So I bought a pair, the least expensive available at the time. I've been using them for a two or three years now. I made the right choice. They are holding up well, and they work well. I do not wish I had bought a fancier model. These have only one compartment, but I make that work for me, using lightweight bags inside to separate stuff. The roll top keeps water out absolutely. The mounting and dismounting system is brilliant.