Jeff,
I have two good push/pull type calls. One was made by Jonathan Payne. He is a luthier by trade and only makes a few turkey calls a year and sells them on ebay. My other one was made by Winky Hicks from Alabama. He makes an outstanding call. I have a couple friends who saw my call and contacted Winky and got one for themselves. My call from him also has a piece of slate on top the paddle that can be locked into place and used with a striker. I saw on another forum Sadler McGraw comment on what a good push/pull call Winky makes.