I'm 39% through it at the moment. Done both the Rollerz and Carnales storylines. Just about to start the other.
I'm very impressed with it. The only thing that bugs me is the fact that vehicles disappear when you're on the freeway.
My character started out as a gangbanger and as it's gone on he's turned into more of a hitman, usually using a combination of the sniper rifle and pistol to take targets out. He looks like something out of Miami Vice with the slick purple shirt, white pants, slicked back hair and very expensive jewellery.
I'm also glad they made it so that if you use cheats you won't get the achievement points otherwise I'd have probably been tempted to use them.
What's everyone's favourite car in the game? I usually cruise around in the FBI SUV I have stored, Julius' car or the Lamborghini type car that you get after beating the Rollerz.