When I am making the bird pods I want them to be very sturdy, almost pottery-like in their firmness. Finn does that beautifully.
A friend gave me some C1 to try, as it is her favorite. I did one pod in C1 and had very nice results. However, the hairiness of the Finn better as it grabs surface design elements a bit better, for my purposes.
This white pod probably will not go outdoors. I really just made it for our home.