My experience with multifunction machines was that while they did a good job with printing & faxing, the scanning function didn't work very well.  My clients complained that the docs were muddy & difficult to read. 

  I went with a stand-alone, Kodak ScanMate scanner about 6 years ago & haven't had a single problem since.  It has a very small footprint so it doesn't take up much room in my shoebox of an office.  There are examiners I know who carry their scanners, printers & laptops to the Registry, where there's wi-fi & send reports out as they do the titles.  Everyone likes them & I believe I'm the only person with a Kodak.  I think everyone else uses a ScanSnap (not sure of the exact name).

Hope this helps