I agree with Stokell. High quality panniers are worth much more than the contents. In searching for panniers, my first priority is to secure the panniers. Based on the research that I have done, the Arkels seem to have the most secure attachment. Also, I would rather leave the panniers unlocked and let someone steal my clothes than have them cut my panniers to steal my clothes. By the way, Cycle therapy, a Canadian company, sells just the Arkel attachment harware for $32. (go to E-Bay and search on Arkel, they always have Arkel stuff for sale. From one of their listings you can click an icon to go to their store). You can then mount your existing panniers with the new Arkel hardware.