2:1 - RB:NW is perfect. It would be nice to add a bit of red in particular, it adds some nice depth. I had 38 RB and 18 NW. It was just a little bluer that a Phoenix bulb. 
 
I recently added 6 OCW and 12 True Violet from LED Group Buy. The OCW is a nice effect, but I'd almost like a touch more red. 
		
	
		
		
		
		
		
	
		
		
	
	
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