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Top3 Mattress compares mattresses sold in Australia, and we make our money when a reader buys through one of our links. Brands pay us advertising and referral fees, and those arrangements affect which mattresses we cover and how high they sit in our rankings. Some mattresses here have no arrangement with us at all.

Every mattress is scored against the same ten published criteria, and each of the ten scores is shown alongside the total. What those criteria measure, and how the total is set, are laid out on our How we rate page. The work behind the scores is desk work: we read published specifications, warranty documents and trial terms, and cross-check them against each manufacturer's own pages. We do not buy these mattresses and sleep on them, and no score here comes from in-home testing.

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Head to head

Onebed vs Sleeping Duck

Both are built to be re-tuned rather than returned. Sleeping Duck is a taller spring hybrid with the wider set of options — medium, firm, or different on each side — and the highest comfort and features scores here. Onebed is all-foam, cheaper to get into, with two settings, the longer trial, no minimum stay, and a shallower sagging threshold in the warranty. Sleeping Duck also limits which bases you may use.

The differences that matter

Onebed compared with Sleeping Duck
Specification Onebed Sleeping Duck
Entry price From $795 (better of the two) From $999
Sleep trial 125 nights (better of the two) 100 nights
Warranty 10 years 10 years
Overall score 9.3 (better of the two) 9.1
Firmness Adjustable — Medium / Medium-firm Adjustable — Medium / Firm / Half-half
Construction All-foam (Memory Foam + Auralux) Hybrid (Pocket Spring + Foam)

Firmness and construction are listed as differences, not as a winner — which one suits you depends on how you sleep, not on which is better made.

Which one is for you

Choose Onebed if…

You want the lower price, a longer trial, or you have a sprung or adjustable base.

Check Onebed price

Choose Sleeping Duck if…

You want split firmness for two people, or the taller spring build.

Check Sleeping Duck price

Pros and cons, side by side

Onebed

Pros

  • The 125-night trial has no minimum stay — you can return it in week one
  • Sagging is covered from 20 mm — a shallow threshold, and one Onebed actually publishes
  • Firmness changes by unzipping the cover and flipping the top layers, not by moving the whole mattress
  • Carries both OEKO-TEX and CertiPUR-US certification

Cons

  • All-foam, so there is no spring layer for edge support or airflow
  • Free delivery carries an asterisk — the site says it may not be available for some rural and remote areas, without saying what it costs instead
  • Only two firmness settings — medium and medium-firm, with nothing firmer
  • The instalment amounts are shown but the provider is never named

Sleeping Duck

Pros

  • Each side can be a different firmness, and a half-half queen costs the same $1,649 as a single-firmness one
  • Firmness is changed by swapping foam pads at home — free and unlimited during the 100 nights, in soft, medium, firm or extra firm
  • The cover and both foam layers lift out and can be replaced individually, so one worn part does not mean a new mattress
  • A perimeter zone of high-strength steel springs, so the edge holds when you sit on it

Cons

  • A queen is $1,649 — $290 more than Emma and $650 more than Koala
  • A 100-night guarantee, the same as Ecosa and shorter than Newentor, Koala, Origin, Onebed and Emma; returns are capped at two mattresses per household
  • Putting it on a sprung or adjustable base voids the 10-year warranty, as do slats more than 12 cm apart
  • The warranty sets a 140 kg limit per sleeper and only counts sagging deeper than 30 mm as a defect

Other match-ups

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