I have been using mechanicals for the past 6 years. I decided this past year to come back to fixed blades. I chose the Muzzy 4 blade and did have to adjust my pins slightly. My choice was between the Slick Trick & Muzzy 4 blade. I wanted to do a lot of shooting with the broadheads. Muzzy offers practice blades & the Slick Tricks seemed a bit expensive to shoot full broadheads into the target (especially when I am not very good at sharpening). I would love to see Slick Trick to come out with practice blades. The Muzzy 4 blade did shoot exactly like its practice blades, but a bit different from my fieldpoints.