Nike Koston SB vs DC Cole Lite S
GO!
Well, I have both (neither skated), so....
Impact support: Cole
Heel lock: Cole
weight: negligible
overall comfort: Koston - there is a unique lining to the back of the suede - the area your foot contacts
boardfeel: Koston...I think. It just feels like there isn't as much material between your foot and the ground.
protection/durability: both of the uppers feel VERY sturdy. The suede used in both is heavy-duty.
I did notice that the toecap of the Koston offers more protection (just by hitting my feet with my knuckles) in the event that the board land on your toes - something that has been the bane of my skating since I started wearing one-piece toecaps.
And, if I'm not mistaken, there is an additional layer of suede in the ollie area on the Cole's, which would double that area's life.
Overall: buy both.