HL-L5000D and ECOSYS M2135dn share specifications such as Print Resolution (1200 x 1200 dpi), Automatic Duplex Printing (Yes), USB (Yes), Maximum Paper Size (Legal).
The main differences: Printer Functions (HL-L5000D: Print, ECOSYS M2135dn: Print, copy, color scan); Print Technology (HL-L5000D: Laser, ECOSYS M2135dn: Kyocera ECOSYS laser); Black Print Speed A4 (HL-L5000D: 42 ppm, ECOSYS M2135dn: 35 ppm).
HL-L5000D 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.