Nouhaus Ergo3D vs SIHOO M18

Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.

Nouhaus

Nouhaus Ergo3D

$499.99

SIHOO

SIHOO M18

$289.99 – $299.99

$210

lower starting price for SIHOO M18 than Nouhaus Ergo3D at the brand stores

Differences at a glance

Nouhaus Ergo3DSIHOO M18

Price: $499.99$289.99 – $299.99
Load capacity: up to 330lbs330 lb (≈ 150 kg)
Recline: Up to 135° of tilt; lock at three different anglesMaximum 126° recline angle
Arms: 4D armrests: height, forward & backward movement, side-to-side rotation, and left & right pivotingAdjustable armrests (Up and down)
Headrest: Adjustable Headrest (up and down, angles up and down)Headrest moves 3.9" up and down and pivots 45°
Lumbar support: Dynamic Lumbar SupportLumbar support adjusts vertically and horizontally

From 11 Nouhaus Ergo3D and 5 SIHOO M18 user reviews, most mentioned first. Green is liked, orange is a caution.

Which is cheaper, the Nouhaus Ergo3D or the SIHOO M18?

The SIHOO M18 is cheaper to start: $289.99 versus $499.99 for the Nouhaus Ergo3D at the brand stores (Sep 2026).

Which has a headrest?

Both: the Nouhaus Ergo3D as standard and the SIHOO M18 as standard.

What do owners mention most?

Adjustability for the Nouhaus Ergo3D, and price and value for the SIHOO M18, based on review summaries.