When sourcing under cabinet lighting, prioritize Color Rendering Index (CRI) values of 90+ to ensure food and countertops appear natural. Look for luminous efficacy of at least 80-100 lm/W to ensure energy efficiency. For installation flexibility, specify modular linkable designs or ultra-thin profiles (less than 10mm) to remain hidden behind cabinet lips. Additionally, ensure the Color Temperature (CCT) is consistent across batches, typically ranging from 3000K (Warm White) to 5000K (Daylight) depending on the end-user's kitchen aesthetic.