The LG OLED B4 55 is a better choice for those who want the best picture quality and are willing to pay a premium. However, the LG Nanocell 75 NANO75 may be a better option for those on a budget who still want a good viewing experience. According to RTINGS, the LG OLED B4 55 has a higher contrast ratio and better color accuracy than the LG Nanocell 75 NANO75.