We'll start with picture quality. In our side-by-side comparison reviews, OLED beats QLED every time. None of the QLED TVs we've tested, including the Samsung QN90B, the TCL QM8 or the Amazon Fire TV Omni QLED, look as good as any of the OLED TVs we've tested, such as the LG C3, G3 or Samsung S95C.

QLED is their premium, higher-quality range, and Crystal UHD is their cheaper range, which is reflected in their price. With a QLED television, you'll have a wider range of colour (including its dynamic range), more brightness, and improved contrast, among other benefits.

They can last anywhere from 5 to 10 years, depending on how well you care for them. Smart TVs are often fitted with highly specific components that can be very expensive to replace. If a small part of your smart TV were to break, it might actually be cheaper to replace it, rather than repair it!

Samsung QLED, mini-LED and QD-OLED TVs are known to be some of the brightest, most color-saturated televisions on the planet. With Tizen built-in, they're well-stocked with the latest apps, and most of the mid-range and high-end models have high levels of quality control.