I use Tim Grounds calls. On my string, I got a 007(2) and a maple supermag. All three calls produce what I think the most realistic canada goose sound through a call. they are easy to operate and easy to get. tim and his mon, Juda are the greatest in customer service. The calls are built strong. In other words, they don't fall apart. I have been using Grounds calls since 1987 when I purchased a half-breed from tim at the Easton MD show. From there, I was hooked. I'll be honest, in that time frame, I tried a lot of other calls out of curiosity, but found none that compare to Tims. There is a maker here in MD who makes a good call. He is John Taylor. Hes located down on the eastern shore. Good guy, good call. Go with a Grounds, you won't be disappointed.