I will get a fresh turkey from Fareway usually. I will wet brine using Alton Browns recipe. I will brine for at least 16 hours to 24 hours. I will also put herbed butter under the skin along with putting sage, rosemary, and time springs in the cavity. I will finish with cut up apple and onions that I have microwaved to get them warm to allow the flavors to permeate the turkey.
The fresh turkey does not have the salt solution added to it, so it will not be oversalted when you brine it. Never had a bad turkey yet the last 5 years I have done it.