We started using an electronic call for the range, it roughly doubled our stand productivity. We are at 75% call in so far which is huge, we can cover so much more area with less stands than before. Kills on stand went way up also, they just don't see you with the call located up wind 50-100yrds and they come right over the top of you! I've had them so focused on the call that I've completely swung around for the shot and they won't catch it, also have had to add a short range weapon to keep them of our toes, I've never had them come in this fast and committed with hand calls. I would not consider my self really good with the hand calls so the electronic made me a super hero!
Tried the Foxpro
but it didn't have enough poop and the sounds were of, got a Wildlife Technologies and haven't blown a call since, the range is unreal and the sounds are amazing! Wildlife Technologies
Also started using a MT decoy with the call, keeps their eyes locked and there ears locked, we've called them right up our wind with this set up!