Already went through my AK Best phase (I'll admit to learning a lot from his books and vids). I'm not a fan of quills at all.

Dubbing or turkey biots (they're longer and easier to handle than is goose) depending how I feel - unless the pattern calls for a material in it's name (like the Hare's Ear Parachute already mentioned).

It's OK to use what you want - that is until the flytying police come and take you away for rehabilitation.