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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

Sealy vs Sleeping Duck

Sealy is the traditional route: a thick innerspring you lie on in a Harvey Norman showroom, four firmness levels at one price, the only specified edge reinforcement here — and no trial once it is delivered. Sleeping Duck is the opposite approach: you buy it unseen, then tune it at home, including a different firmness on each side, with free pad swaps during the trial. Sleeping Duck costs less and scores higher overall.

The differences that matter

Sealy compared with Sleeping Duck
Specification Sealy Sleeping Duck
Entry price From $2,399 From $999 (better of the two)
Warranty 10 years 10 years
Overall score 8.4 9.1 (better of the two)
Firmness Four levels — Firm / Medium / Plush / Ultra Plush Adjustable — Medium / Firm / Half-half
Construction Innerspring 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 Sealy if…

You want to test it in person and want a traditional innerspring feel.

Check Sealy price

Choose Sleeping Duck if…

You are comfortable buying online and want to tune the feel — or need different sides for two people.

Check Sleeping Duck price

Pros and cons, side by side

Sealy

Pros

  • Four walls of UniCased XT edge reinforcement, specified by the maker rather than left unstated
  • Four firmness levels at the same price, so choosing the feel costs nothing
  • Stocked in Harvey Norman stores, so you can lie on it before you buy
  • Made in Australia, which Sealy states on the product page

Cons

  • A queen is $3,699 — around three times Ecosa and six times Newentor
  • No sleep trial, so the showroom is the only chance to test it
  • Sealy does not sell direct; you buy through Harvey Norman
  • The Rosewood build is a Harvey Norman exclusive, so you cannot price-compare it elsewhere

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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