I know that many shooters consider the 3x-9x to be THE standard. However, I personally like the 4x-16x. Why? Well, for my hunting applications, I really can't tell the difference beteen 3x and 4x anyway, but I certainly can between 9x and 16x. Granted, I RARELY use 16 when hunting, but I love to have it when I go to the range.
I know that 4x-16x scopes generally tend to be longer and heavier and more expensive (and usually have A.O.s), but I personally prefer them to 2x-7x and the 3x-9x.
But I agree with everyone else...6x-24x is just way too much for a .30-06 for hunting.
Zachary