Side-by-side comparison based on expert reviews and community consensus.
Ergotron HX Monitor Arm
Best for Heavy UltrawidesErgotron LX Monitor Arm
Best OverallPrice
$300-$350
$150-$170
Summary
Built specifically for heavy, large monitors including ultrawide OLEDs. If you have a 34"+ monitor over 20 lbs, this is the arm that can actually hold it without drooping.
The most consistently recommended monitor arm across Reddit and expert sites. Smooth gas-spring adjustment, rock-solid build, and wide compatibility make it the default choice for most setups.
Pros
- Handles monitors up to 42 lbs, covering nearly all ultrawides and large OLEDs
- Same trusted Ergotron gas-spring mechanism as the LX
- Widely recommended in ultrawide and battlestation communities
- Confirmed working with heavy OLED panels like the Samsung G9
- Gas-spring mechanism allows effortless, smooth height and angle adjustments
- Wide weight and VESA compatibility covers most standard monitors
- Consistently recommended across multiple Reddit communities and expert review sites
- Excellent cable management built into the arm
Cons
- Expensive at ~$350, hard to justify for standard monitors
- Overkill for monitors under 20 lbs
- Large clamp footprint may not suit all desk edges
- Premium price point (~$150-$170) compared to budget alternatives
- Not ideal for very heavy ultrawide or large-format monitors
- Plastic components on some joints feel less premium than the price suggests
Our take
Yes, $350 for a monitor arm is a lot — but if you have an expensive ultrawide OLED, you don't want it crashing down because you cheaped out on the arm.
If you only want to think about this once, buy the Ergotron LX. It's the benchmark every other arm gets compared to, and it earns that status.
Buy
