Review on BTF-LIGHTING WS2812B RGB 5050SMD Individual Addressable 16.4FT 60Pixels/m 300Pixels Flexible Black PCB Full Color LED Pixel Strip Dream Color IP30 Non-Waterproof for LED Screen, LED Wall - DC5V by Cody Stroop

High failure rate. After a while, several strips failed or died, including one strip that arrived and didn't work. The problem is that the LEDs are of poor quality compared to other suppliers. This is often related to how well the transparent LED potting material protects the chip and its leads from shock, water vapor, and temperature changes. LED and watch the ink spread across the surface of the chip below. This means that the LED is poorly sealed around the LED. This seller should find higher quality LEDs but I think you get what you pay for. They may be ok for light use or if you don't mind having them repaired and replaced over time, but I think I'll look to other sellers.