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Useful but not sufficient on its own. Gresham's Law, in various incarnations, including Akerlof's "The Market for Lemons" suggests limitations. A trusted third-party reviewer (Consumer's Union, CarFAX, Kelly Blue Book) helps. Anecdote: the last really big-ticket item I bought (automobile), I'd had positive experiences with two manufacturer's products previously, but really didn't care for their current offerings within the product class / price range I was seeking. The vehicle I did buy was one I considered based on its Edmunds review -- best in class, multiple years running. Some years on, I've been happy with the purchase (though of course, post hoc rationalisation is a common fallacy). For other products, other signifiers matter. On G+ I detailed frustrations looking for a decent LED cabinet-lighting system. I'd exhausted local, online (Amazon and major hardware/lighting store) sources. A recommendation from my G+ contacts was for Ikea. The specific product didn't work, but Ikea had another set of lighting components (separate cord, transformer, remote switch, and lighting elements) which has worked excellently. Took a few weeks longer than intended to find what I was looking for. Otherwise, I rely strongly on what local retailers will carry and stand behind. Ikea, for some products, turns out to be a good source. Factors depend heavily on what it is I'm purchasing and just how it will have to function. |