My top three:
Ready, Set, Snow designed by Me & My Sister - 29 skus
http://www.unitednotions.com/fcc_Ready_Set_Snow.pdf
Elegance by Sentimental Studio - 20 skus
http://www.unitednotions.com/fcc_Elegance.pdf
Believe Batiks by Laundry Basket - 23 skus
http://www.unitednotions.com/fcc_Believe_Batiks.pdf