I am debating on trying the Williams Sonoma Buttermilk brine this year; it sounds great. I always make a butterball; but using a fresh turkey and this brine sounds great! I understand about the gravy; the WS catalogue does state that it won't make a good gravy-but I always use their turkey gravy base anyway. It's the 1st time I've heard mention of the no stuffing inside?

The catalogue doesn't mention that.
We have been brining our turkey every year for what seems forever. I wouldn't do it any other way! Unbelievable results!
We have used the WS brine, the Alton's method, some fancy thing with juniper berries that took me forever to find, and plain old salt water. Haven't really noticed the difference between any of them, except that we tend to use the juniper berry one as it is easy and has always given us excellent results.
The only thing I do different is brine for longer than the 6 hours Alton Brown prescribes. We usually do it overnight to 24 hours in a large cooler with lots of ice.
We always put the stuffing in the bird and it comes out perfectly.
I never make gravy from the drippings, so can't comment on that.
Here is the recipe we use:
CHEZ PANISSE'S TURKEY BRINE
INGREDIENTS
2 1/2 gallons cold water
2 cups kosher salt
1 cup sugar
2 bay leaves, torn into pieces
1 bunch fresh thyme, or 4 tablespoons dried
1 whole head of garlic, cloves separated and peeled
5 whole allspice berries, crushed
4 juniper berries, smashed
INSTRUCTIONS
Place the water in a large nonreactive pot that can easily hold the liquid and the turkey. Add all the ingredients and stir for a minute or two until the sugar and salt dissolve.
Put the turkey into the brine and refrigerate for 24 hours. If the turkey floats to the top, weight it down with a plate and cans to keep it completely submerged in the brine.
Note: You may halve or double the recipe. The important thing is to prepare enough brine to cover the turkey completely.
To roast: Remove the bird from the brine, rinse and drain well. Pat dry.