Herman Miller Sayl vs Humanscale Diffrient Smart

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

Herman Miller

Herman Miller Sayl

$935 – $1,580

Humanscale

Humanscale Diffrient Smart

$1,987

$1,052

lower starting price for Herman Miller Sayl than Humanscale Diffrient Smart at the brand stores

Differences at a glance

Herman Miller SaylHumanscale Diffrient Smart

Price: $935 – $1,580$1,987
Seat height: 16–20.5 in standard; 15–19 in low; 16.5–22 in extended16.5” – 22.8”
Seat depth: 16.5 in fixed; 16–18 in adjustable16.25” - 18.75” seat depth adjustment range
Load capacity: 350 lb (159 kg)up to 400 lbs.
Recline: Harmonic Tilt; Tilt Limiter standard, Tilt Limiter with Seat Angle optional18° recline + 8° backrest tilt
Arms: Options: No Arms, Fixed Arms, Height Adjustable Arms, Fully Adjustable 4D ArmsFixed Duron Arms / Adjustable Duron Arms / 4D Adj Duron Arms / Armless
Lumbar support: PostureFit Sacral Support Standard; Lumbar Support OptionalTri-panel Form-Sensing mesh adapts its lumbar support to each user (no manual lumbar adjustment)
Warranty: 12-year, 3-shift15-year, 24/7 warranty

From 23 Herman Miller Sayl and 2 Humanscale Diffrient Smart user reviews, most mentioned first. Green is liked, orange is a caution.

Comfort
Herman Miller Sayl22 mentions
Humanscale Diffrient Smart3 mentions
Price and value
Herman Miller Sayl19 mentions
Humanscale Diffrient Smart2 mentions
Design
Herman Miller Sayl14 mentions
Humanscale Diffrient Smart3 mentions
Back support
Herman Miller Sayl14 mentions
Humanscale Diffrient Smart2 mentions
Build quality
Herman Miller Sayl14 mentions
Humanscale Diffrient Smart1 mention
Adjustability
Herman Miller Sayl10 mentions
Humanscale Diffrient Smart3 mentions

Which is cheaper, the Herman Miller Sayl or the Humanscale Diffrient Smart?

The Herman Miller Sayl is cheaper to start: $935 versus $1,987 for the Humanscale Diffrient Smart at the brand stores (Oct 2026).

What do owners mention most?

Comfort for the Herman Miller Sayl, and comfort for the Humanscale Diffrient Smart, based on review summaries.