When evaluating Super Flux (also known as Piranha) LEDs, you must prioritize thermal management and luminous intensity. Key specs include a forward current typically around 20mA to 70mA, a viewing angle ranging from 60° to 120°, and luminous flux measured in Lumens (lm) rather than just mcd. Ensure the color temperature (CCT) is consistent across batches, usually categorized into Warm White (2700K-3500K), Neutral White (4000K-5000K), or Cool White (6000K-9000K) to meet specific application needs.