Brad my saki was the 250 one and IMO the radium are a way stronger  
 
I never light any other 400watt than Radium so I realy can't tell but I have no douth your are right on the Hushio and the saki 400 watt anyway  
I run 400 watt only for the radium if not I will have keep my 250 saki since they realy looking good and IMO they are still realy great bulb for the price 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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