I like them and use them. Only complaint is that the bleeder blades on the four blade Stingers bend easier than the main blades. One thing you want to also check if you hit something hard with them is to make sure the main blade isn't bent. It isn't as obvious as you would think, so you have to look close.

With all this said, these blades sharpen up very well, and will slice through anything.

I tried them and they didn't fly all that well out of my bow. With that said, I also discevered yesterday that my bow was out of tune, so that kinda makes it a mute point.
Try 'em, and if they fly well, stick with 'em.

Never had a problem with them. Picked up another pack today.