Definitely volumizes, holds curl - but those with sensitive eyes, BEWARE
I've only used this a few times and I have to say, it seriously holds a curl.  I slept with my makeup on and by afternoon the following day, the mascara looked fresh as ever.  I also took a shower and the mascara didn't budge, so it's definitely waterproof, too.  One thing I wish I had paid attention to before purchasing was that the formula incorporates fibers, which tend to irritate sensitive eyes.  All day, I find fibers flaking off into my eyes, making them red and watery.  I haven't had success with any fiber-containing mascara.  So - if fibers don't bother you, definitely give this a shot.
Rating: 4 stars