First of all, you should not try and compare this to GTA because if you do, you will never enjoy it. This game bares more simalarity to Mafia and True Crime streets of LA but with GTA Style missions.
You are a Saints row gang member and your objective is to run the whole city, taking territory along with the story line. Boys in the Hood style... like San Andreas.
Cool car modifications and great mission ideas such as Insurance Fraud and Escort will surly have to be included in GTA 4. The graphics are great and I would expect similar in the new GTA...
Overall a fantastic game and well worth the money. Game life span is a little short but earning respect before each mission insures you don´t charge through the game.
Learning curve - 1 hour - 1 hour and a half
Graphics - 9
Audio - 8
Length - 8