Well, I haven't been at this too long, but I definitely have the most from Sweetie Cake. I have all 3 pigments, one of the petit lipgloss pots, 3 softsparkles in 2 colors and I plan on getting the quad this week if my store still has them (they had 2 left on Friday).
I didn't think I was going to get anything from the Sundressing collection, but I went to Nordstrom today and I had to get a quad and I got the softwash gray pigment. Looking at the pictures I was least interested in the softwash gray pigment, but I can't believe how pretty it is in real life. I don't think it came through on the ads very well.