tell us more about the motor and trannie. Tire size will play a part also.
When picking gear you need to consider the motor, trannie and tires as a whole package.
How much of your driving is at 60 to 70 mph?
Will the motor (cam) let you cruise in high gear at your chosen speed?
for me the 3.55 are good cruising gears and 3.73 for quick acceleration from the red light
maybe this site will help
Second Strike Gearing Calculator