So there we have it,...total disagreement on what is the best call.
...And here are the basic reasons: 1) nobody calls the same, and 2) every mouth call will sound differently because of the imprecision in the construction process.
...And here are the solutions: 1) practice, practice, practice,...until you can control the sounds you make with a mouth call, and 2) learn to modify each call you get to find the "turkey" in each individual call.
The End...