Capacity is 120MB, and both desktop and portable versions are already shipping. There are several second-source makers, and the drive can be built on existing floppy disk drive production lines. This is not the fastest drive, but I suspect raw performance is not going to be an issue for most users. Were it not for the compatibility issue, this would be Iomega's market to lose. There are 14 million-plus Zip Drives, with versions for the PC, notebook, and Mac.
Performance is decent.
Current capacity, 100MB, is passable. But the cartridges do not work with the existing base of floppy disk drives. This is the late entry with the least catchy name. 200MB capacity, fast data transfer, 3,600-rpm rotational speed, backward compatibility, famous maker. A lot hinges on the price, as Sony's design is more complex than that of the SuperDrive, with separate heads for 1.44MB and 200MB media.