Easy to tie bird wings onto with cable ties.
Dogs seem to like them.
Look good in the air, and on the ground.
They can be hard to see if you shoot yellow loads, and have the DD set for distance. They go to fast, especially for young dogs to get a good view of. I suggest raising the launch angle so that you get a high arc launch.
Mine are about 4 years old and nothing has broken yet.
Can't really say anything bad.