Haystack, Comparadun, Sparkledun, OR Usual?
Sparkle dun… Easy to tie, cheap to tie,float well, fish well… Actually I think I’m going to go tie some right now
None of the above. CDC wing, dubbed body, tail on the 16s and larger… haven’t used a different dry may pattern in the last ten years.
Haystack…simple and effective. 
Sparkle dun.
I’m going with the sparkle dun, although I can’t see them, so I usually fish parachutes
Sparkle Dun.
Joe
Sparkle Dun
As a clerk at a fly store, which would you recommend…only one.?
Usual. Easy to tie, floats like a cork and catches more fish the more it gets chewed
sparkle dun. or a cd loop wing emerger.
Comparadun, taken a lot of Trout in various colors with this fly
Snowshoe Hare Sparkle Dun!