I have the Stretch and Endela and much prefer the Stretch - from what I can tell the Stretch 2 is similar enough to the Stretch that I would still prefer it over the Endela.  The main thing I like is that the Stretch has a longer blade and a shorter handle.  The choil is also much more comfortable and useful.  The blades start off at about the same thickness, but the Stretch is more solid at the tip - I think it was meant to be more of a workhorse.
But it's late, I'm tired, and I could be wrong about everything except which knife I prefer
	
		
			
		
		
	
				
			But it's late, I'm tired, and I could be wrong about everything except which knife I prefer