Both. I like San Andreas because of all the fun cheats, but I like GTA V because it has better graphics and a better storyline.
GTA V Reasons: -Looks realistic -Fun missions -Awesome new features -Much more violent -Costume character -GTA Online -Racing -Amazing cars -I never play San Andreas.
V, I have both and I prefer V because you get the entire map in the beginning. All I really do is drive around or kill people.
Nothing can beat the old memories and groove street. GTA San Andreas. Even though both of the games take place in the same country and same time. The game has nothing to do with Graphics really. San Andreas was built for older consoles, if it had made it to the newer consoles like PS4 and Xbox 1 it would be much better.