Knolan, thanks for the info but the link doesn't work.  I was only looking to change to lithium in my single cell lights anyway.  I got 6+ months of life out of plain ol energizers in my Maglite XL50, before I started carrying a Fenix.  Well, and I will do lithum in the L10 as well.  About toughness of the L10, as long as sitting on it isn't a problem, I should be fine.  Not that I make a habit of sitting on flashlights...
Since I am not a tint snob, there probably won't be much of a difference to my eye. I would get the Nichia 219 version if it came in red. But since it doesn't...
	
		
			
		
		
	
				
			Since I am not a tint snob, there probably won't be much of a difference to my eye. I would get the Nichia 219 version if it came in red. But since it doesn't...