Despite having the same map, these two games have very different atmospheres.
The soundtrack is a factor as well because it sets the tone of the game.
Personally I prefer VCS because the atmosphere there is perfected with the neon, sky and color. The songs also actually corresponds to their radio stations more. Flash fm finally sounds like an actual pop station, V rock has got heavier rock, something it should've had, VCFL was a big plus, Emotion 98.3 was massively improved and so on.