My experience with them is limited. I bought them one year because they are half the cost of others and replacement blades are even cheaper. I killed a doe that year. Double-lung--she went about 30 yards. Gave them to my sister last year. She was shooting 35 lb bow. Shot and killed a 150lbs doe. They are not as smooth or pretty as some but so far I've seen that they give similar results for a lot less money.