I got it last week.
Its not as good as GTA3 or VC.
Its pretty good though.Twists and turns lead to different endings.
The control is a tad awkward though.The city is an actual scale of LA and is HUGE.BUT,you really don't see most of it unless you want to.There are no hidden packages to find or anything so there is really no reason to explore.Not that I can see anyways.
The police patroling is kinda neat.Random crimes occur around the city and you can respond if you want.Muggers,street brawls,drug deals,robberies etc you name it.You can be a good cop by flashing your badge,firing warning shot or engaging in hand to hand fighting to apprehend the perp.
Or you can be Dirty Harry and blow the scum away
There 3 different upgrades you can work on throughout the game.
Your car and driving skills
Your gun and shooting skills
Your fighting skills
You go to dojos,shooting range or street race/course to earn your upgrades.
Stuff like:fast reload,PIT manouver,new grapples etc
Overall I would say this game is a renter first.Then decide.Replayability is gonna be limited.