I've only used Peachy Keen and Gotta Glow. I would only use Peachy Keen again if I were doing my makeup for a night out (it has quite a bit of shimmer in it and I hate shimmer blushes, bronzers, etc.)...even though Gotta Glow is also a shimmery, if you use just a small amount, it works well for a beautiful highlight!
Complexion Brush: This brush is also pretty flat and it may be because of the packaging (I haven't washed it yet). It's good for setting concealer/foundation.
I've only used a few of these nail polishes and they are alright. The polish dries fast but the formula is just a little weird when it dries. If you don't apply a top coat immediately you will get scratches on your nails. My biggest problem with these are that some of them were packaged as if they had been used already. The bottles don't seem full and when you open them there are pieces of dry nail polish around the ring...what's that all about? :o/ (You can see what I mean if you look at the the polish in the middle in the second picture).