I personally didn't like makeup forever in the beginning because it almost looked like Sephora SAs were getting paid extra from them and always was pushing their products..
but now that I do,
I love the Diamond powder, its very pretty; Full coverage concealer is very nice (I've been trying a LOT of concealers lately, this one and hourglass stick concealer seems to blend the best into the skin), mat velvet foundation is awesome if you can find the shade match (which is hard.. the only thing I hate about the foundation is the shade selection), their matte eye shadows are actually nice, and their Liquid eyeliner is honestly the best. its the only eyeliner that stays on my oily eyelids.
I don't like their aqua eyes pencil liners because I find that I have to tug and pull..
the primers are okay.. its not terrible, but there are better primers out there..
brushes are okay.. there are better ones out there
finishing/setting powder is great, but it doesn't work for everyone.. so its worth a try.