Brother has long been a trusted brand in printing technology and their latest printers continue that tradition. In fact, the HL-4040CDN and the MFC-9450CDN all-in-one printer models are actually much greener than previous models and help you save energy and resources.
Both printers use an automatic duplex printing feature. This makes it so the amount of paper you use is lessened and it allows you to print on both sides of paper. The models do differ, however. the HL-4040CDN features a max print quality of 2400 x 600dpi, 21ppm print speeds and more. You can get this model this month for about $400.
The MFC-9450CDN model on the other hand, features a 21 ppm print speed, a copy speed of 17 ppm and a max print resolution of 2400 x 600. It also has an Ethernet port and USB 2.0 ports. This model will ship in January for about $650.