In my opinion,
the 3.07 rear gear with a wide ratio transmission will improve drivability in city driving by making clutch ingagements easier at start-up.
The 3.07 will add about 7% to the RPM on the highway, which is a negative.
If you are going to road race or drage race. the narrow ratio transmission is the way to go.
The best way to go is a T-5 five speed with either a 2.88 or 3.07 rear end.