MAC Warp Speed Ahead is a warm plum with a sparkle finish that is limited edition and retails for $21.00. In comparison, Maybelline Mauve Mystique (025) is a cool plum with a cream finish that is permanent and retails for $8.99.
Maybelline Mauve Mystique (025) is 80% similar — it is less shimmery, lighter, brighter.