Which ones are better or do you prefer and what are the differences?

i dont fink dere is much in it at all, but from wot i know k.leather is easier 2 mould and more comfy but the leather can get worn and strech on a wet surface.

i say just go for the nikeskin not the vapor k's. ill give reasons. the kng leather that nike uses on its VAPOR K line isn't all that great. the weight is about the sama as the normal vapor, so they have to make the leather really thin. the leather won't really give u that much better touch as normal K LEATHER would, i think just cuz nike has to cut it and treat it a bit to make it light wieght. plus the maintenance is still a problem, especially since the leather isn't that good anyways. just get normal vapors cuz they are waterproof, easy to clean, light, and possibly one of the greatest niek boots ever. POSSIBLY.
PS. if the vapor k's are on sale tho i would go for them, just cuz I don't really care what the upper of my boots is.

Yeah, i concur. The uppers not gonna magically change your game. Part of the reason k-leathers so good is cause the grain works funny ways you can cut it really thin. Thats why you get better touch. I speak with great authority having been roo shooting!

id do with da k leather on a hot day ur feet will be boiling nikeskin is notin more than a plastic. Plus way betta touch

first of all nikeskin is soo thin that ur touch is just as good if not even closer to the ball than if u had leather. also, who says leather keeps ur feet cool. those get just as hot on a hot day. ur feet will be boiling in any boot if its hot enough.