Almost every VPN guide opens with a feature table, and features are the last thing that should decide this. They are the easiest thing to change your mind about, they are where every provider competes hardest, and at the level most people use a VPN the differences between them barely register. Start somewhere else.
Decide what you want it for
There are really only four common reasons, and they point at different products.
You are on other people's networks a lot — cafés, hotels, airports — and want your traffic out of reach of whoever runs them. This is the easiest case: almost anything reputable does it, so optimise for a client that connects without you thinking about it and a price that does not jump after two years.
You want your internet provider to stop building a profile of you. Also straightforward, with one condition: you are moving that visibility from a company you pay to a company you also pay, so the question becomes which one you would rather trust, and whether anyone has checked their claims.
You want to watch something that is not available where you are. A narrower requirement than it sounds. Streaming services actively block VPN traffic, providers differ a lot in how well they get through, and none of them will promise it works tomorrow.
Someone might actually come looking. Journalism, activism, a country where this carries real risk. Here the ordinary advice stops applying and the things that matter are anonymous signup, anonymous payment, and a no-logs claim somebody outside the company has verified.
Then check two things, not twenty
Whatever your reason, two questions separate the field more than any feature list.
Has anyone independent examined the no-logs claim, and when? Every provider says it keeps no logs. It costs nothing to say. A published audit by a named firm is the difference between a claim and a checked claim, and the date matters as much as the existence — a report from four years ago describes a company that no longer exists in that form.
What does it cost in year three? The advertised monthly rate is usually a single charge covering twenty-seven or twenty-eight months, which then renews at something between two and four times that figure. That is not hidden, exactly; it is just on a different page from the number in the advertisement. Compare renewal prices and the ranking changes.
Ignore the server count
Providers advertise thousands of servers in a hundred countries, and it is close to meaningless. What you need is a fast server somewhere useful to you, and a thousand slow ones do not add up to that. Speed is worth checking against a measurement somebody actually took; the number of locations is worth checking only for the two or three you would ever choose.
When free is fine, and when it is not
A free tier from a company with a real paid product is a genuine option — the paid plan is what funds it, and the free plan is the advertisement. A free VPN from a company with no paid product is funded by something, and that something is usually you: your traffic, your data, or advertising injected into it. The question to ask of any free service is not whether it is limited but what pays for it.
Related guides
Explore more articles
Keep exploring our deep-dives and comparison guides.
The fastest VPNs
Every VPN slows your connection. These are ranked by how much, using measurements somebody took rather than the claims on the pricing pages.
The most private VPNs
Ranked on what each service can know about you, who can compel it to say, and whether anyone outside the company has checked.
The cheapest VPNs
Ranked on what a month actually costs rather than the number on the advertisement, which for half of these is a rate that expires.