A LOT of bowhunters have been really pleased with Slick Tricks. Almost all find that they group right with their field points with no tuning beyond good field point tuning, out to distances as far as you'd care to shoot. The first time I shot one it was in the center of my group (I shot it first) at 50 yards, and I am only afairly good shot. Many have testified to their killing success; many have used the same head and BLADES with only a sharpening for more than 8 deer. If you aren't happy with them they will refund your $ with no questions asked.
www.slicktrick.net