If you don't like the system requirements, then get better hardware (or stop putting it down). This game is amazing!
As far as the game itself; GTA has not seen any better days then this. The story is filled with crazy diverse characters that you can help, hate, kill, or just ignore. The weapons in this one are a little lacking in my opinion, but you still have a wide variety (but man how I miss the mini gun from Vice City...). One thing I do want to complain about is that the mini expansion was only released for xbox and not for PC. Thats crap. I love playing as a Russian(ish) dude, but playing as a biker would be a nice change of pace.
In short, this game is just as good, if not better, then any of the other GTAs. Stop complaining that the reqs are high, its a high tech game. Update you hardware or buy it for a system. It will be placed with my most favorite games (until the next GTA)
Peace,
BaOK-8