I like their brushes, but recently they've increased in price. I would recommend individual brushes over most sets (especially the travel ones) because those are better quality usually, but the sets are cheaper per brush.
Their lipsticks work alright. Not the best, but decent. I would think the quality is equivalent to the Revlon lip stuff (which is a bit cheaper).
I really don't like the eyeshadows. It's a hit or miss for me (mostly miss) because their shadows tend to be inconsistent in texture. Some are very rich and easy to apply, like this shimmery antique gold, but some of the darker colors disappoint. They don't apply very well. I am liking the matte black so far.
I'm also not a fan of the atomic volume mascara. The bristles on the brush are really big and hard and hurt/irritate my eyes during application.
In short, I think their stuff, with the exception of the brushes, is not much different from the better drugstore brands. They do sometimes have some cooler colors worth checking out, but I would recommend trying it on at the store before buying.