San Andreas is only GTA game I ever have played on PC (because of its excellent mp of course) XD
But I have previous gta games for ps1 and ps2, and iv for ps3
gta1,gta2 and gta london omfg....but lololol they are funny to play sometimes because the story lines and grafix suck so much hahaha
gta3,vc,lcs,vcs all pretty good games in my opinion (vice city stories sucked kinda but gta3 and lcs are good to play sometimes)
san andreas for ps2/pc both excellent but as roban know...ps2 better single player than my pc at moment, but hey SAMP is fucking awesome
san andreas (best gta ever)
gtaiv I lovvve the graphics on ps3 for this...but storyline and actually gameplay does suck i think, its more fun on gtaiv to just do sick suicides lol its much fun doing this
(i never player ballad of gay tony or the other new one yet so maybe they are great)
this is my personal view on gta games.
I'm finished XD