stonefly,

Okay, given the reason you wanted to know (Whiting 100s), I'll offer this insofar as the sulphurs:
I'd have size 14, 16 & 18. I've been told by an excellent tyer that the Whiting 100 packs are labeled a little smaller then their actual size. Therefore, I'd get a package that was labeled 16 or 16/18. Also, some people like sulphurs tied with very light ginger and some with light dun.
How's that for adding to your confusion.

Allan