First of all, welcome to the forum. I know you'll find it a great place.
There probably is no more controversial topic than turkey chokes. As far as I can determine, I've tried all the commercially available models, through most guns and with most if not all, commercially available shotshells.
In reality, most will pattern well when paired with the right gun, barrel and shotshell. The challenge of course is finding out what works well or best with your gun.
In as concise a statement as I know how to make on the subject, unless you're obsessed with "killing paper" and seeing how many holes you can make in a specific circle of some size, you don't need to spend a lot of money on either chokes or shotshells.
The 3" Winchester HV (Black Shell) with 1.75 oz. of #6 lead shot, that was introduced in 1996, has probably been responsible for the death of more turkeys than any other shell on the market today. It still kills them as dead as dead can be today.
That shell is widely available, very reasonably priced and exceptionally consistent. I recommend the 3" shell over the 3.5" shell because it patterns better, costs less and kicks a lot less.
It is the internal geometry of a choke tube that is important to its performance, not the exit diameter. Charlie Boswell, the owner of both Comp N Choke and Kick's proved that many years ago with his fine designs.
In my tests, there are 2 very reasonably priced turkey chokes that will handle all lead and tungsten-based shot turkey loads that just work time after time, in gun after gun.
The SSX designed by Roger Burrell is a premium quality choke tube with great "internals", rated for all turkey loads and very reasonably priced.
The Wright's #3 is a limited production turkey choke with a long parallel section and great internal geometry that I've used for years with excellent results. Not as widely available but again, a great turkey choke.
You can see these recommendations and others at http://allaboutshooting.com/index.php?cPath=23
You just don't need the "latest and greatest" and certainly not the most expensive choke/shotshell to cleanly kill turkeys at all ethical ranges.
Please let me know if I can help.