Casual,normal,expert
I use expert...no auto aim,it works well
When you press LT you automatically draw your weapon(selected in circle menu),no need for menu pimping
I used auto-aim in GTA4,combat was just too clunky for me.
One other thing
LOD(level of detail) system is excellent,draw distance is huge huge huge,way beyond anything released this gen,PC or console.
Programmers at Rockstar San Diego deserve Nobel prizes.
And all those screenshots that Rockstar released are real,no bullshots...game looks exactly like that
There are some "jaggies" when you move around...depending on the time of the day and contrast,but if you stand still you have Rockstar "bullshot".