I prefer PS2 controller but i dont have an X-Box so i wont know the controller.
But i think using the PC would be the hardest because there is so many buttons to press
Example
Woozie - The Da Nage Thang
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My Favourite
Sweet - End of The line
because you get to kill over 200-300 people and chase a firetruck
More realistic Car horns, Engine
Car Oil Leaks
Car runs out of fuel
Plane Runs out of fuel
All guns equipped with a "Paid for" silencer
More "Realistic" Interiors
Kids and animals on the streets ect