My border collie Lizzie absolutely loves her frisbee. We adopted her recently and the frisbee came with her. I personally like it b/c it's easier to throw than a regular frisbee - making it easier for Lizzie to catch it in her mouth. She loves this thing and guards it with her life at the dog park. She has even learned to paw at it a certain way to get it to stand up so she can grab it with her mouth and give it to me in my hand.
We'll definitely be order more b/c heaven forbid we lose it or tear it! It would be like the scene out of Best in Show... "WHERE'S BUSY BEE!!!???" :)