i would pick the lebron Vs because itz pretty comfy and good grip and when i play in it it gives me the first quick step to explode to get pass the defender =] so i would say it light about 17 ounce.
(and i own the Vs)

the 8s look pretty good for looks but for balling i heard it gets your feet hot after u play in it for a while and when M.j was playin in the 8s back in the day they say that he got the athletes foot from the 8s but idk. even my friend say it gets hot after a while wearing the 8s
(was planin on gettin 8s to)

so i think you should get the lebron Vs to ball in but thats up to you hope thats helps. the black and white Vs look sexi