Our Methodology

Each review follows the same steps.

1. Gather documents

We start with the manufacturer’s product page, owner’s manual or quick-start guide, specification sheet and warranty terms. When a manual is not available for a specific configuration, we use retailer and dealer specification sheets and the Amazon listing, and the review says so.

2. Cross-check the numbers

We compare the figures across sources. Where they differ (for example, weight or the number of speeds), we report the manufacturer’s figure, note the discrepancy and explain which source we followed.

3. Explain the mechanics

We explain what each specification means in practice: how a two-stage design differs from a single-stage one, why battery capacity limits cordless run time, or what tracks add on a slope.

4. State limits honestly

We list documented limitations, such as batteries sold separately, surfaces a machine is not designed for, and operating temperature ranges.

What we do not do

Unless a page says otherwise, we have not physically tested the machine, and we do not publish performance numbers of our own. We do not publish prices.

Updates

We update reviews when manufacturers revise models or documentation, and the page shows its last update.