I threw three zip disks in the bin, because they develop the click of death problems. They were Fiji disks. I don't have problems with Iomega disks. I have a Zip Plus. I don't use it anymore, because I graduated. I backup my data on CD-r's. After few years I make a backup of these CD-r's to keep my data safely.
I think a floppydisk is much reliable than a ZIP disk. :-D