I'm shopping for a Printer & Scanner, or a combination
multifunction device with printer and scanner.

I have 4 criteria:

#1. Small Size. This means a small footprint on the desk, small
overhanging components in any direction, small height. 

#2. Good print quality for business documents. Photo print is secondary.

#3. The scanner must be able to scan multiple documents at once (i.e.
it will feature a Document Feeder).

#4. Low cost per page... should be "average" or better. In particular,
I'm not a fan of color printers that don't have separate cartdridges
for black and color.

To sum it up, it must be a "step up" from the now discontinued (and dead
on my desk) Brother MFC-7150. The 7150 was quite satisfactory on Criteria
2 through 4, but now I want something smaller.