Well, Night Fever is WAY prettier than Beauty Marked. It's actually a black with alot of deep red shimmer. With BM the red doesn't show up as much.

With Night Breed, the glitter is chunkier and looks almost like stars, the glitter twinkles in the light. With Black Tied, the glitter is alot finer and there is more of it. Also, NB is a true black whereas BT isn't because of all the shimmer.