If I had to pick one of the three I'd go with Cajun Specialty Meats. I know they have been doing the turducken for over 10 years and from what I have heard, they provide the turducken to John Madden every year.
They offer several different versions that you can choose from so just take a look and decided how you want to go and how many people you're going to feed.
i concur. don't know what this years pricing will be but expect + $125 and s/h