Buyers must prioritize Panel Type (IPS for color accuracy, VA for contrast), Resolution (4K is now the industry standard for signage and professional work), and Brightness levels (measured in nits). For outdoor or high-light environments, a brightness of ≥700 nits is essential, while indoor office displays typically require 250-350 nits. Additionally, verify the Refresh Rate (60Hz for static content, 120Hz+ for video production) and Color Gamut coverage (e.g., 99% sRGB or DCI-P3) to ensure visual fidelity.