I love the high dimension eyeliners, the colors come out with a metallic sheen (some more than others), they go on *very* smoothly w/o tugging on my eyelids and last for hours when applied over a base or powder.
Silver Flash is a gray/silver color (much lighter than Steel Flash) and like Sapphire it doesn't seem quite as metallic as some of the other shades, but it's still a great e/l. Wish these weren't discontinued!