I had a small cedar scratch box made by an old timer from Ark but broke it after a couple years use. Sure sounded sweet but not a lot of volume. As far as friction calls, I started out with a box call and still carry one along with a few other calls. It's been the demise of many a bird. You can make all kinds of calls with it including the gobble; soft or loud and almost anybody can use one. Keep it sanded and chalked up and you could probably only carry that one call to the field. The only downside to them is that it takes motion and 2 hands to use them and you could possibly blow an opportunity at close birds. You can somewhat disguise that motion but then you still have to move from call to gun.
Just kiddin bud. It's no secret that I prefer to target well educated, public ground gobblers. My style has always been soft and subtle. Soft clucking and yelping along with lots of leaf scratchin. Realism has always been key and the tone I get from my scratch box is second to none in my opinion, especially the hollow, popping clucks. Although I also carry a well made slate pot, a few 3 reed, split v's, and a wingbone, my scratch box is my go to call on the toughest of the tough 
Calling is a small part of my over all strategy. Knowing your turkeys and how they use the ground they live on is a much bigger part of the puzzle. Choosing a set up in which he feels comfortable approaching is a learned skill that can only be acquired through time in the woods. This is the most important part of my strategy. This, combined with realistic calling and patience, has proven to be extremely deadly in my experience.
