I got really burned out and sick of the *required* racing missions or required missions with time that was unrealistically hard. I played some of IV but never got too far (got bored with it) I hated the whole gangster thug feel of San Andreas.
I guess I need to reevaluate and look into this one though since I'm hearing such good things about it.
I agree Vice City was pretty awesome, I loveeeeed it.