For me, if I want a box call from a custom call maker, I am going to call him.
I ordered one from Spring Creek, told Mike what I wanted, and told him to use whatever wood he suggested... He made the call sound exactly as I had requested.
For me, a large part of the pleasure of purchasing any custom call is to talk to the call-maker and give him/her a bit of "artistic freedom" in designing a call personally for me...