I have a Lexmark X1140. I COULD NOT BE HAPPIER!!!!!!!
It scans FANTASTICALLY - you can set ANY resolution you want!
It prints FANTASTICALLY - better than most! It will do a max of 4800 DPI!!!!!!! (in other words, photos come out AS PHOTOS on photo paper, even under a loup! The print speed is GOOD at low resolution (300 DPI)
It works PERFECTLY as a photocopier
I have NOT used it as a fax YET, but am planning to (I have a stand alone fax).
The only drawback is the print cartridges are small - generally only get 5 HIGH resolution photo prints before they run low on ink. Printing text etc, they last about 300 sheets.
They are also pretty cheap - I paid under $150 Australian for mine.