I know there is a reason you might want a timber call and an open water call, but I just go with a mix of single and double reed open water and tell them not to blow it louder than they want it! Of course, If I was charging good money, I may have to cater a bit more. I also tell anyone I give a call too where they can find other inserts if they want to fuss with it. I hunt rice fileds and open bays so I , personaly,have never heard a duck call that was too loud for me. We SCREAM at em down here on the Texas Gulf Coast. But we don't blind call.... ; D