I only have a backup of Style It Up. However, I have gone through many Brush Cleansers, Techs, Powder Fixes, and Fix Fluids, as well as several Bare Canvas Paints, two Gesso Eyeshadows and a few Myth Lipsticks. I REALLY REALLY wish I had gotten a few backups of Sunday Best eyeshadow. It really was the best. I also have 3 Black Tieds (1 pan, 1 pot, 1 in palette), 2 Carbons (1 pan, 1 in quad), 2 Expressos (1 pan, 1 in quad), 2 Beauty Marked (1 pan, 1 in palette), 2 Deep Truths (1 pan, 1 in palette), and 2 Satin Taupes (1 in palette, 1 in quad). Hahaha. I always buy colors, and they're always in a palette or quad later on!!! I also have 2 Bang On Blues and 2 Big Ts because I bought one, then later got it as gratis. =/ Still wondering what I should do with the two extra. They're both gorgeous but there's no way I'll ever get through the first in this lifetime.
I know there was a member of this board named RockingChick and she bought something like 10 or 15 backups of Rocking Chick lipstick! She really loved that one!!