Steven,
Paul is correct. I have the Brother MFC 8860 DN and am very pleased with it. The Paperport software that comes with it is very nice as well. You do have to connect the machine via USB or parallel to a computer on your network but then the "Received Faxes" folder can be shared across the network. You can convert all incoming faxes to PDF format, edit them ( for instance mark # of refills and stamp with your bitmap signature), save, print, fax back or import to AC. I handle all my pharmacy requests this way and, using Logmein, I can take care of stuff sitting in the comfort of my own home. By the time I get back to work the next day I have already handled the refills, imported stuff to AC and deleted junk faxes.
I also have the received fax folder on the machines in the exam rooms so that, if I need a report, the girls can call for it, it comes into the recived fax folder and there it is in front of me in a matter of minutes. The paper/toner I have saved in the month or so I have been using the machine is staggering.
Check out this link.
http://www.brother-usa.com/mfc/ModelDetail.aspx?ProductID=MFC8860DNLeslie