I have used the excellent Brother MFC series printer/fax/scanners in small offices for many years (See MFC-7360N, MFC-7440N, etc on the Brother site). The sheet feeder works reliably and they come with excellent Paperport Software that automatically produces PDFs. I have used them successfully on mixed networks of PCs and Macs. Some models can be found on sale for well under $200. Plus they fax and print as well.