Independent reviews, guides and reporting.
Support across body types and sleeping positions, measured firmness, and what the trial period really allows.
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Nothing published until testing is finished.
Mattress firmness ratings are not standardised, so a "medium" from one brand is a "firm" from another. We measure indentation under fixed loads, test with several body types and sleeping positions, and read the trial and warranty terms for the conditions that quietly void them.
Suction claims are meaningless on their own — we compare navigation, consumable cost, noise and how each handles real floor plans.
Top pick
Roborock S8 series
$799.99
at Roborock Store
As of 23 Aug 2026, 15:40 UTC
Battery ecosystems cost more than the drill. We compare torque under load, charger speed and what the platform costs to expand.
Top pick
Makita DHP486 combi
from $259 (bare)
Written down before any product is considered.
We write down what would make a product the right pick — and how each criterion is measured — before we look at what is on sale.
Anything we state about a product comes from our own testing or from the manufacturer's published documentation, linked on the page.
Where a category can be tested, we test it over weeks rather than an unboxing session, and we publish the conditions we tested under.
We do not print a price we have not verified, and we do not treat an RRP as evidence of a discount.
Affiliate links, if present, are labelled on the page. No partner can buy a placement, a rank or a verdict.
The full process is documented in our review methodology and testing process.
Water and air testing kits return numbers most people have never been taught to interpret. Here is what the common measurements actually indicate.
Boiler efficiency gets most of the attention, but the biggest swings in a winter bill usually come from the building envelope, not the appliance heating it.
The letters on a fridge or washing machine box compress years of testing into a single glance, but the newer repairability index matters just as much for lifetime cost.
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