Head-to-head · Best Dual Monitor Arms

Ergotron LX Dual vs Monoprice Workstream Dual Monitor Arm

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Ergotron LX Dual comes out ahead by a clear margin (4.7 vs 4.1). The gap is mostly about Professionals running two monitors up to 27 inches who want the most stable, smoothest-adjusting arm and a long warranty. — read the strengths below before deciding.

Higher ratedRanked #1 in Best Dual Monitor Arms

Ergotron LX Dual

4.7

$489as of Jun 7

The Ergotron LX Dual is the gold standard for dual monitor arms. Its all-aluminum build and patented Constant Force motion deliver the smoothest adjustment and the most rock-solid stability of any arm in this group, backed by a 10-year warranty. Reviewers across PCWorld, Work While Walking, and BTOD treat it as the benchmark. It costs more than budget steel stands and caps at about 20 lbs per arm, but for everyday dual-27-inch setups it is the most reliable choice.

Strengths

— All-aluminum construction is the most stable arm reviewers have tested
— Patented Constant Force (CF) motion needs no knobs or levers to adjust
— Each arm independently lifts, tilts, pans, and rotates two displays up to 27 inches

Watch-outs

— Per-monitor weight tops out around 20 lbs, less than the heavy-duty HX
— Limited vertical range can be short for very tall standing-desk users
— Premium price relative to budget steel-pole stands

$489 · Check Price on Amazon Full review →

Ranked #4 in Best Dual Monitor Arms

Monoprice Workstream Dual Monitor Arm

4.1

$84.32as of Jun 7

The Workstream by Monoprice Dual is the budget gas-spring pick: PCWorld names it the best budget dual arm, noting it costs about four times less than the Ergotron LX Side-by-Side while supporting monitors up to 34 inches and 19.8 lbs per arm. Its steel-and-aluminum build is sturdier than all-plastic stands, but setup is awkward and the motion isn't as smooth as premium arms. For a low-cost full-motion dual setup, it is a sensible value choice.

Strengths

— Roughly four times cheaper than the Ergotron LX Side-by-Side
— Gas-spring counterbalance handles monitors up to 34 inches
— Steel-and-aluminum construction is sturdier than all-plastic stands

Watch-outs

— Setup is difficult and operation isn't as smooth as premium arms
— Gas springs can need re-tensioning over time
— Finish and feel are clearly budget-grade

$84.32 · Check Price on Amazon Full review →

How they stack up

Ergotron LX Dual

The LX Dual is the build-quality benchmark in this group, more refined and stable than the budget VIVO STAND-V002 and Monoprice Workstream Dual, and rivaled only by its heavier-duty sibling, the Ergotron HX Dual. Where the HX Dual handles heavier and larger monitors, the LX Dual is the better fit for standard dual-27-inch setups, and the HUANUO DS12 undercuts it on price while approaching its metal build.

Monoprice Workstream Dual Monitor Arm

The Monoprice Workstream Dual is the budget gas-spring alternative, far cheaper than the Ergotron LX Dual and Ergotron HX Dual and lighter-duty than the HUANUO DS12. PCWorld pegs it at roughly a quarter the price of the Ergotron LX Dual. It offers true gas-spring motion that the mechanical-spring VIVO STAND-V002 lacks, though its build and smoothness trail the metal arms above it.

Specs side-by-side

Spec	Ergotron LX Dual	Monoprice Workstream Dual Monitor Arm
Construction	Aluminum	Steel + aluminum
Weight Capacity	7-20 lb per arm	Up to 19.8 lb per arm
Monitor Size	Up to 27" each	15-34" each
Motion	Constant Force (lift, tilt, pan, rotate)	Gas-spring full motion
Extension	Up to 25"	—
Lift Range	Up to 13"	—
Mount	C-clamp + grommet	C-clamp + grommet
Warranty	10 years	—
Adjustment	—	Height, tilt, pan, rotate
VESA	—	75x75 / 100x100
Collection	—	Workstream by Monoprice

← See the full ranking of best dual monitor arms