Consumer Reports
Like Rotten Tomatoes for the stuff you buy. Consumer Reports is a magazine, originally founded in 1936, that provides reviews and statistical information for products you might purchase.
Looking for a new car? You can check out Consumer Reports to see which one is most reliable, or has the lowest maintenance costs, or is likely to last the longest.
Looking for a new computer? A new smartphone? A new washing machine? Consumer Reports can help with that, too. The monthly publication is produced by the non-profit Consumers Union.