Buyers should prioritize Luminous Efficacy (lm/W) to ensure energy efficiency, aiming for at least 100 lm/W. The Color Rendering Index (CRI) is critical for interior aesthetics; a CRI > 80 is standard, while CRI > 90 is preferred for high-end retail or hospitality. Additionally, verify the Driver Brand (e.g., MeanWell, Philips, or Lifud) as the driver is the component most prone to failure. Ensure the Heat Sink material is high-grade die-cast aluminum to facilitate heat dissipation and extend the LED lifespan to the rated 50,000 hours.