I just got this trick in the mail and when I first opened I was skeptical, because I expected
something different but the effect and how it's done is genius.
pros: impromptu
fantastic visual effect
almost angle sensitive free
examinable
cons: a
little expensive
cannot reset in front of audience
problem with noise (offers
some help but not too much)
Overall I do reccomend this because the effect if done
correctly will blow away the audience, I can't wait until I master this effect and start performing.