V is the best about costumization , and just that, first days was nice to play, but now i had complete full game and im level 150 on Online, online missions is allways the same, it gets boring.
For me is:
1- Gta Iv, best story, love the city
2-GTta San Andreas -Best voice characters, Tempenny, Ryder, T Bone, Cj etc
3-GTa Vice city, very nice city and best character , Tommy
4- Gta V costumization
6-Gta 5, i hate the short story, i hate the map, country side is boring, i just like La Mesa, El burro Heights, bad characters and boring, the villains are ridiculous, Trevor is nice, the online is allways the same MC missions are 5 or 6 , bunker missions are cooler but are just like 4 or 5 lol