I have a friend who has a Grand Old Master that is an absolute turkey whisperer...I thought, o.k. I'll get one and the turkeys will come in in a trance...Let's just say that didn't work out for me...
The old Grand Masters were glued side boards. The new ones are carved out of a block of wood. The sounds are DRASTICALLY different! My new one went right to the shelf with all my junk calls that I don't know why I keep...Save your money!