When I wrote about this last week I said I was still undecided and wanted to hear what you all had to say. The problem, of course, is that we weren't asked to vote on which box of threads we might want in our possession this summer, or which box is the prettiest, but which represents our organization. Deciding which public face you want to put forward is a major decision for anybody, individual or organization.
To begin with, I like the idea of SAQA finding a sponsor in Aurifil; I agree with Terry that everybody wins in this kind of cooperative marketing. And I was really glad that they chose to go with the manufacturer of my favorite thread. Low-lint, beautiful colors, the best piecing ever. (My ideal quilting lineup is to put Aurifil 40-weight on top, with 50-weight of the matching color in the bobbin.)
I agree with Lisa that the pink is so not SAQA. But about that variegated thread -- we don't know whether these threads are sewing-weight or quilting-weight. Although who would bother with a variegated thread just for piecing? Anyway, Norma and Marcia both like them.
I toyed with A, because I think it may be the most versatile set of colors for piecing, which is my thing. Those pale neutrals are good with just about any color down to medium, and the dark blue would work well on medium darks or true darks. (On dark colors you don't want to piece with matching thread, because it would be too hard to see if you had to rip out a seam. So I use green thread on blue fabric, blue thread on black fabric, etc.)
But in the end, remembering that I am choosing SAQA's public image rather than an addition to my own thread drawers, I went with C. Speaking metaphorically, I liked the fact that the colors were complex rather than simple primaries. I liked the mysterious purples and the brooding olive. Let's don't be too naive and earnest to the public; I want my professional organization to be sophisticated and suave.