I use blue eared pheasant, schlappen, coque, marabou, or pheasantrump depending on the size of the fly, texture of feather, and/or color. I've used stripped peahen tail feathers as well, but did not really like their texture.
I saw some of the early whiting stuff, and it was too fine for my taste (although I hear it has gotten better). Burned goose is somewhere off teh bottom of my list. Stems are too think...