Brief point you may not have considered.  Long-time watch guy here.  One very nice feature of stainless steel is it is easily polished and scratches removed by any jeweler.  I've had a number of SS cased watches polished up to good as new after a few years wearing them.   Can't do that easily with anodized aluminum.  May not matter to you, but another consideration in you're choosing between models.
	
		
			
		
		
	
				
			
			
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