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Buying guides

Plain-English guides to the decisions our rankings can't make for you: what to check, what to ignore, and what the fine print usually hides.

The category is five years old and still confusing. Six checks separate a device you'll wear from one that lives in a drawer.

The answer depends almost entirely on four numbers, and every one of them is in a document the sales page doesn't show you.

Subscription pricing hides more than it reveals. Here's how the money really works, and the four cheaper routes most people never check.