Tag #mx 1 post tagged mx. ← All topics comparisons Ergotron LX vs HX vs MX: Which Monitor Arm Is Right for Your Setup? Ergotron makes three of the best single-monitor arms on the market — the LX, HX, and MX. They look similar, cost differently, and serve different displays. Here's a head-to-head on capacity, reach, and the curved-monitor caveats. May 11, 2026