LOL!!! [8D]
The Slick Tricks do some major damage to the styrofoam target! If you peel back the whitecovering on the backsidewhere the Slick Trick was, you'll see agaping hole likethe styrofoam was hitwith a deer slug at close range!

Edit: Oh yeah, one more thing.... Ease of arrow removal....
Magnus Stinger -Easily pulls from styrofoam target with broadhead still on and intact and cleanly slices the target as it comes back out.
Slick Trick - Won't pull back through. You have to unscrew the broadhead, like Western MA said.
NAP Thunderhead -Pulls from styrofoam target with great effort, but it pulls back through and tears the target as it comes back out.