Infoimaging.com recently published a roundup with brief descriptions and user comments on six large-format inkjet printers. The printers are:

 Canon imagePROGRAF W6200

 Epson Stylus Pro 9600

 Hewlett-Packard DesignJet 5500

 Mimaki JV4-130

 Roland DGA Hi-Fi Jet Pro FJ-500

 Encad NovaJet 1000i