If you're looking for the best owl call on the market, Hook's Custom Calls has it. Its creator and Hook's team member, James Harrison, spent years producing hundreds of design prototypes before deciding on a final design. The Hook's "Harrison Hoot'n Stick" has probably won more calling competitions than any other owl call combined so you'll definately want this realistic call in your turkey vest this spring.
If you're looking for an instructional video on how to use a Harrison Hoot'n Stick, then it's a no brainer that'll you'll want to learn from the man himself, Mr. James Harrison. His video tutorial is below.