I'm trying to figure out how to choose a power supply for a 5-meter strip of SMD 5630 LEDs, and I can't wrap my head around which current values I should use. 

The Samsung spec sheet for their 5630 rates their device (forward current) at 150 mA, but throughout the majority of the document, they use a forward current of 50mA. The "50 mA" number is also referred to as "sorting current," which is a term I'm not familiar with. 

So, the question: when specing a power supply for a SMD 5630, which number do I use (or perhaps better asked: under which conditions would I use one number over the other)? 

[Here's the link to the spec sheet I'm referencing](https://d114hh0cykhyb0.cloudfront.net/pdfs/spmwht5225d5waq0s0.pdf).