It's a tough call between OLED and IPS if you're a gamer. While the former allows for deep and accurate colors, the latter offers faster refresh rates for smoother and more responsive movement. Eurocom will let you choose between OLED or IPS with only a relatively small price difference between them.
https://www.notebookcheck.net/Eurocom-Nightsky-RX15-gaming-laptop-now-shipping-with-60-Hz-OLED-and-240-Hz-IPS-options.429115.0.html