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How we test and rank

What each score is built from, where our evidence comes from, and the biases we have deliberately designed against.

A score is only useful if you know what produced it. Here is ours.

What we measure

We rank on the specifications that decide the cup and the ones that decide how long a machine lasts. In practice that means five things:

  • Grind consistency and adjustment range. The single largest variable in home coffee. A grinder with three usable steps in the espresso range cannot make espresso repeatable, whatever its burr material.
  • Brew temperature and stability. Held between 92 and 96 °C across the whole cycle, or drifting? This is the difference between sweet filter coffee and the sour, thin cup people associate with drip machines.
  • Steam and milk performance. Whether the system produces pourable microfoam or stiff foam, and how it behaves with oat and soy rather than only with whole dairy.
  • Serviceability. Can the brew unit be removed and rinsed? Are burrs, gaskets and seals sold as spares? This is why a machine that makes slightly worse coffee sometimes outranks one that makes better coffee.
  • Running cost. Capsules, filters, descaler and consumables over three years, which for capsule machines dwarfs the price of the machine itself.

Where the evidence comes from

Three sources, weighted differently. Hands-on use where we have it. Published measurement — including standards bodies such as the SCA's brewing certification, which is a real test with a pass mark rather than a badge you buy. And the weight of long-term owner reports, which is the only practical source for the question that matters most: what is this machine like in year six?

Where a judgement rests on the second and third rather than the first, the review says so.

What the score means

Scores are out of ten and they are not comparable across families. An 8.8 hand grinder and an 8.8 espresso machine are each excellent at their job; the number does not say the grinder is as important as the machine. Within a family, the ranking is meaningful and the ordering is deliberate.

Hubs are sorted by price tier before score — entry, mid, then top — because a hub should read like a budget ladder, not a list with the most expensive product nailed to the top.

The biases we designed against

Affiliate sites drift towards expensive products, towards whatever is newest, and towards whatever converts. Our defences are structural rather than a promise: the commission rate is identical across everything we cover, our highest score belongs to a twenty-euro tool, and no product has ever been placed in exchange for anything.

The one bias we cannot fully remove is availability. We cover what is genuinely purchasable across Amazon's US, UK, German, French, Italian and Spanish stores, which means excellent equipment sold only through specialists is under-represented here. Where that matters, we say so in the review.

Questions people actually ask

Do you accept payment for reviews or placement?

No. We have never accepted payment, free product or any other consideration in exchange for a position in a ranking. If that ever changes it will be stated on the page itself, not in a footer.

Have you personally used every product on the site?

No, and we do not claim to. Where a judgement rests on specifications, documented mechanisms and the weight of long-term owner reports rather than on hands-on use, the review says so. Pretending otherwise is the commonest dishonesty in this genre.

Why does a cheap product sometimes outrank an expensive one?

Because we score against what a product is for, not against its price. The highest score on this site belongs to a twenty-euro distribution tool, because it fixes the commonest cause of bad home espresso and nothing else does it as cheaply.

Last reviewed 8 August 2026