A 200-inch screen, 9,500 lumens, Bluetooth audio and built-in speakers – four projector claims checked against 59,620 buyer ratings.

Four USB WiFi adapters ranked on 88,556 buyer ratings. The only WiFi 6 model finishes last, beaten by older AC designs with far deeper records.

Four USB to Ethernet adapters ranked on 55,782 buyer ratings. The one with the most buyers finishes last, and driver complaints are why.

Four budget fitness trackers, 5,658 buyer ratings, and the same complaint on every one. Here is exactly where they fail, and what still works.

Two 1080p webcams, 55,300 buyer ratings, one winner. The camera with 50% more reviews scores lower, and the record explains why.

Four numbers printed on tech boxes – 4K, 240Hz, 24-hour battery and a 4.8-star rating – checked against what buyers actually report.

Four portable monitors ranked on 17,000+ real ratings. A 2K 240Hz panel finishes last, beaten by a plain 1080p screen with 45x the evidence.

Four webcams ranked on 57,000+ real ratings. The 4K camera finishes last and a 1080p veteran wins – because resolution is not the bottleneck.

Four portable Bluetooth speakers ranked on 91,000+ real ratings: a budget champion, an armored outdoor box, a two-ounce wearable and a bestseller.

Four laptop stands ranked on 55,000+ real ratings. Three are rated 4.8 stars, so the number of buyers behind each score is what settles it.

Four phone tripods ranked on 53,000+ real ratings: a 43,000-rating bestseller, a featherweight traveller, a tracking stand and a flexible mini.