Personally, I like Reading's best..why...because if you imagine a fly shop in a movie, that is what it would look like. Plus...I love how Charlie can explain things like my high school physics teacher. You know he is right. You have no idea what he is telling you...but...you know if you can figure it out it is important. It always makes me laugh.
I will share this secret that I learned last week. Fort Bennett, the general store outside the park, has a very good selection of fly tying materials. The guy at the counter may not know marabou from dubbing, but the selection was really good. Also, if he is not to busy, the owner at Larry's will show you how to tie a fly. Basically, I use all of them.