HL-L6250DN and ECOSYS M2135dn share specifications such as Print Resolution (1200 x 1200 dpi), Automatic Duplex Printing (Yes), USB (Yes), Ethernet (Yes).
The main differences: Printer Functions (HL-L6250DN: Print, ECOSYS M2135dn: Print, copy, color scan); Print Technology (HL-L6250DN: Laser, ECOSYS M2135dn: Kyocera ECOSYS laser); Black Print Speed A4 (HL-L6250DN: 46 ppm, ECOSYS M2135dn: 35 ppm).
HL-L6250DN may suit users who need its differing values, while ECOSYS M2135dn benefits those who need its paired strengths. Review the specs table above before deciding.