M106w and MFC-L5705DW share specifications such as Print Technology (Laser), USB (Yes), Wi-Fi (Yes), Wi-Fi Direct (Yes).
The main differences: Printer Functions (M106w: Print, MFC-L5705DW: Print, Scan, Copy, Fax); Black Print Speed A4 (M106w: 22 ppm, MFC-L5705DW: 42 ppm); Print Resolution (M106w: 600 x 600 dpi, MFC-L5705DW: 1200 x 1200 dpi); Automatic Duplex Printing (M106w: —, MFC-L5705DW: Yes).
M106w may suit users who need its differing values, while MFC-L5705DW benefits those who need its paired strengths. Review the specs table above before deciding.