To start the process, I laid out all the lace yarns and took a picture.
Clockwise rom top left--Wellington Fibers, SweetSheep BFL, Merino Lace, GrandRiverYarns, Elann Baby Merino Lace (?), SeaSilk (that I used for Gail), Headwaters Wool, KnitPicks Shadow (?).
For some reason, the SweetSheep BFL won. I bought this at the K-W Knitter's Fair last September, for $20, because it had some dark purple dye spots that shouldn't have been there. As I wound it up, I also found some flubs, some tiny knots, and then the yarn broke. There might have been a loose knot that came apart as the swift spun and I pulled. After winding the second half, I decided that the two balls were small enough for my electric ball winder.