The Verge recently reviewed another OLED laptop, the HP 2019 Spectre x360 15, which uses the same SDC 15.6" display. The Verge says that the OLED is tremendous, and the reviewer sees "no reason why someone would pick an LCD over this OLED, given the option".
Samsung Display started mass producing its 15.6" 4K laptop OLEDs in February 2019. These high-end displays are optimized for gaming, graphic design and video streaming, and Samsung says that the new AMOLED panels, in addition to the very high resolution, feature high contrast ratio, extreme color accuracy, full HDR compatibility, a very wide color gamut, and remarkable outdoor visibility.
The brightness level ranges from 0.0005 to 600 nits. Coupled with the high contrast (120,000:1), this maximizes the HDR benefits. Samsung also says that the displays support the entire DCI-P3 color gamut - while emitting "significantly less blue wavelengths" compared to LCDs. Blue light emission can potentially be harmful to the eye.
We have seen several laptop makers introduce OLED laptops in 2019 besides :Razer, HP, Lenovo, Gigabyte - and Dell's Alienware. According to a report from Korea, Apple is also considering to adopt OLEDs in its next-gen laptops (although that isn't confirmed at all). Analysts estimate that SDC's AMOLED panels cost about $50-60 more than comparable LCDs.