The panel technology is also a key feature. IPS (in-plane switching) generally produces much greater color accuracy and superior off-axis viewing, but tends to lag in response times, which can lead to blurring. TN (twisted nematic) panels can offer far higher refresh rates and usually better response times than IPS, but can look washed out or just blah. A middle-ground technology that’s appearing more often is VA (vertical alignment). VA is sometimes alternately referred to as “wide viewing angle” technology. (Many assume this to spec to be IPS, but it’s not). In our experience, we’ve found VA panels to run the gamut from being worthy competitors to IPS to being worse than the better TN panels. Generally, if color accuracy is important, go IPS (a trademark of Sharp), and if you want the fastest response times go for a gaming-oriented TN panel. With the variability of VA, we recommend you check feedback from reviewers and users of a particular model. The wildcard in all this is OLED. OLED-based panels have been used in phones for years but have recently migrated to larger screens in laptops. IPS, TN, and VA all use LEDs behind the screen or along the edges. “Black” is produced by a shutter-like mechanism that blocks light from coming through. As you can imagine, there’s usually some light leakage, which means the black tends to be gray. OLED panels don’t rely on edge- or backlighting. Instead, each pixel generates its own light. To produce black, it just switches off the light. This amounts to truly stunning contrast ratios and vibrant colors. OLEDs also boast fantastic response times. The negatives include smaller screen sizes (we haven’t seen anything larger than 15.6 inches yet), higher cost, and lack of support for variable refresh rate. OLED panels can also use more power than conventional methods if the image is on a white background.