I don't use a box call a lot, but I'll keep a long box in my vest made by call maker Carl Beatty of NCGC and I'm going to keep in my vest the Wet Box from Primos just for a rainy day.
Paul's Calls by Albert Paul best call hands down. He hand makes the calls from orders only. You can see his booth at the NWTF show in Nashville but he will not have any calls to buy you have to place a order for one. You can spec the call exactly the way you want it.