The argument is usually framed wrongly
“Buy cheap, buy twice” is a slogan rather than an analysis. The correct framing is usage frequency and consequence of failure.
A tool you use twice a year, where failure means an annoying trip to a shop, should be cheap. A tool you use weekly, or one where failure under load could hurt you, should be good. Those two sentences resolve most of this debate.
Where cheap tools are correct
Specialty tools you need once - a bearing puller, an oddly-sized socket, a flaring kit. Buying a premium version of a tool used annually is not durability, it is waste.
Consumables: abrasives, blades, bits. These wear out by design and brand barely matters.
Anything you are likely to lose or lend. There is no durability argument that survives a tool being left on a job site.
Where expensive tools pay back
Daily-use hand tools, where ergonomics compound. A screwdriver handle that blisters your palm costs you something every day.
Precision. Torque wrenches, measuring tools - cheap versions are inaccurate in ways that cost more than the tool.
Anything under heavy load. A cheap ratchet skipping under torque is a busted knuckle; a cheap jack stand is considerably worse.
Cutting edges. Steel quality shows immediately and permanently.
The Snap-on question, answered honestly
Snap-on tools are excellent and the premium is substantially about the service model: a van that arrives at your workplace and swaps a broken tool on the spot.
For a professional mechanic paid by the hour, downtime is the expensive thing and that service is worth real money. For a home user, the van does not come and the premium buys you a tool marginally better than a mid-market one.
That is not a criticism of the tools. It is a statement about who the pricing is designed for.
The middle is where the warranties are best
Here is the finding that makes this page worth writing: the best warranty process we found in tools is not at either end of the price range.
TEKTON publishes no time limits, no receipts, shipping paid by TEKTON, and same-day dispatch on claims filed before 2pm Eastern on a weekday. No premium brand we checked matches that process.
Craftsman publishes a full lifetime warranty on hand tools claimed by walking into the shop you bought them from - the simplest process of any brand.
GEARWRENCH publishes a lifetime warranty for the original consumer purchaser and sells ratchet repair kits, so a worn pawl does not end the tool.
Irwin warrants each hand tool for the life of the tool under normal wear and tear.
What we would actually buy
A mid-market socket set with a no-questions warranty, a handful of genuinely good individual tools for the things you use weekly - a Knipex Cobra, a Wera screwdriver set, a Channellock plier - and cheap versions of everything you touch twice a year.
That is a better-equipped workshop than either extreme produces for the same money, and it is what most experienced tradespeople’s boxes actually look like.