HL-3260N and ECOSYS M2635dw share specifications such as Ethernet (Yes), Multipurpose Tray Capacity (100 sheets).
The main differences: Printer Functions (HL-3260N: Print, ECOSYS M2635dw: Print, copy, color scan, fax); Print Technology (HL-3260N: Laser, ECOSYS M2635dw: Kyocera ECOSYS laser); Black Print Speed A4 (HL-3260N: 32 ppm, ECOSYS M2635dw: 37 ppm); Print Resolution (HL-3260N: 600 x 600 dpi, ECOSYS M2635dw: 600 x 600; up to Fine 1200 dpi).
HL-3260N may suit users who need its differing values, while ECOSYS M2635dw benefits those who need its paired strengths. Review the specs table above before deciding.