I've seen too many pics of the heads after a shot into a phone book in which they were just literally destroyed... before you say "phone book?"... the other heads that underwent the same test came out intact. It was apples-to-apples.

I've also heard a lot of reports like Rob's and goherd's... I've got 11 of them (a bunch of my non-bowhunting friends sent off for the free demos ), but will probably save them for jackrabbit huntingafter I get my antelope year after next.