I didn't purchase Believe, but recommend it wholeheartedly.
I do perform an effect that could be considered an alternate handling of the believe effect. Beofre I get painted as unethical, allow me to elaborate-
I independently created an effect which I called 'Cornered' a while back, and was going to release it through the magicbox as a d'load. However, a couple months before release, we heard about Believe. It is essentially the same effect, same mechanics at least. the actual effect is structured a little differently, but it is the same in essence. We obviously pulled production. I do however perform my handling of what is the Believe effect, and feel justified in that fact absolutely.
In closing, I know from about a year and a halfs experience of playing with the same basic effect, it is a REAL attention grabber, and well worth the money. Clean up is minimal, and all the heat is entirely away from the dirty areas.
Hope this helps.
CL