I think the GTA 3 and VC were the best of the series, I don't like how they've taken out cool stuff like Killing Sprees, planes, random stuff in GTA4 and instead added crap like a social system and having to meet up with people all the time. GTA was all about being a total rogue guy who wasn't attached to anything and did want he wanted, that was so cool.
Although then you do have cool things in GTA4 like being able to shoot in all directions from car, being able to jack locked cars, and obviously better graphics.
I am really looking forward to GTA4 on the PC because you'll be able to use a mouse. It is what GTA4 on the consoles is lacking and any fps on the console is lacking too (NB I did not say GTA4 was an fps).
So yeah, looking forwad to GTA4 on PC, even though it is nowhere near the best of the GTA series.

Bring it on, hopefully it'll make the most of my 4870X2 in Crossfire.