When comparing OLED vs IPS, we find that OLED is superior to IPS LED monitors when it comes to quality. They produce darker black levels, more vivid colors, and have better response times. 

If you're choosing between IPS or OLED screens, remember that OLED monitors have as good (if not better) viewing angles, and can be more energy efficient with darker images. OLED is significantly more expensive, however, and is only being produced in limited size ranges.