User blog:Winter Moon/Vice City or San Andreas?

So as I have said in my user profile, I currently only have Grand Theft Auto IV for the PC, but I have been thinking of getting either VC or SA at some point in the near future. I'm kind of flipping between the two, so I hope that I can get some opinions on this post as to which game I should get. So, which one do you think? VC or SA? Please leave an opinion as to why.