Overall: meh, not for me. Mascara that smudges just isn't acceptable. Fibers can be irritating if not smoothly applied.
Pros: Holds curl well, fibers do help build volume. Fairly easy to apply formula.
Cons: The fibers can get clumpy if you're not careful. On rainy days, definitely smudges. Fibers were irritating my eyes when I applied the mascara in a hurry.
The brush is pretty big - I can't decide if this is a good thing or a bad thing. I think I prefer tapered brushes - this one is shaped like a dumbbell - big on both ends. It worked pretty well though.