My Jack Russell terrier loves this toy and so do I!
It flies really far so my dog gets a lot of excercise running after it at full tilt. It also floats and the bright colors make it easy for my dog to retrieve in the water. Durability: the Zisc is by far the most durable disc-type toy I've tried; my hyperactive-chewer dog does manage to destroy the thinner center section of the Zisc in about 3 months but the thick outer rim still flies on its own! My only complaint: I can't get West Paw Design toys in the Montreal area so I must make twice-a-year trips into the USA to buy their products.