I shot the Slick Ticks last year and was impressed with their performance on deer. They do not seem as sharp as Thunderheads but IMO they seem as sharp as Muzzy's. IMO the advantage of the ST's is the thicker blades and solid steel ferrule. I shot 3 deer with the same head with no damage to the head. I replaced the blades after each deer and I plan to resharpen the used bladeson a Lansky sharpener before next year. For me, the ST's flew the same as my Thunderheads and field points.