Finnex Ray II DS vs DD Comparison
I love the original DD ( 7k/10k ). Nice, stark coloration, grew my plants very well. However, I decided to try out the newer DS ( 7k ) and am very pleased with the results! Just posting this here as a comparison. I don't think you could go wrong with either light.
Here is the 7k/ light
Here is the 7k/10k light