I haven't had any issues with them. They fly great and function without flaw. I've had great kills on reindeer and whitetails using the Spitfire 125's. I have noticed that the practice blade inserts for them don't always group in with the actual blades though... just something to be aware of, buy a spare set of blades for practice. The thing I like most about them is the safety factor. I travel a lot and it's nice to know that if I have a broadhead get loose in my gear it's not going to ruin an expensive hunt nor do I have to worry about cutting a cable with them while nocking an arrow on game.