Depends on what you want and how you drive. I love my 4.10's, yet I also like my buddy's car that has 3.73's. 4.10's for drag racing definately. 3.73's for a lot of driving and not really much track use, or if you can't handle the slightly higher RPMS or shifting requirements of the 4.10's. I cruise 30 in 4th, hell 5th works too. I turn like 2750 or something at 70 MPH in 5th(nice for passing without downshifting)