Don't rule out the Deer Flute from River Valley Game Calls. It features a brass slide which is quickly adjustable from dominant grunt to doe bleat for the "contact" call of the can. I mimic the "can" with the Deer Flute all the time, less movement and just as good of sound with more reflection in the tone.
Rob was gracious enough to send me one of these to try. Right now, I'm walking back and forth between my new archery shop I'm building in the lower level of the house and outside to make some cuts on my mitre saw. Just inside the woods, I can hear a doe bleating continuously. I guess she's calling to one of her fawns. Anyway, I stepped back inside and grabbed the Flute Rob had sent me, and slid the brass slide down and perfectly mimicked her calls.
Yep, Rob, I'll be taking this one to the woods with me this year!
Thanks again buddy!