These devices are always the worst possible solution IMO. Normally they comprimise quality of the printer. Printer supplies are often more expensive for them. And if something breaks, you're out a printer AND scanner.
I would like to suggest you use a FAX Modem and software to receive faxes. Then you can view them and print the ones you like. And use a separate printer and scanner.
<font color=blue>Watts mean squat if you don't have quality!</font color=blue>