Originally Posted by cbr2702

Looking at cutter for cree XR-Es:

http://www.cutter.com.au/products.php?cat=48

I see the Q5 category, but I also see a more expensive R2 category. The binning information of Cree's site says nothing about an R2 category, but is it likely that the R2 bin is brighter than the Q5 bin?

Also, it talks about various W[X] "tints". I can read the definitions in the binning sheet, but it's hard to ground the numbers in reality. For bike lighting, do tints matter (are they all pretty close)? Is there something better than picking one randomly?