I have been using them for a couple of years now. They work as advertised but I will tell you a couple of cautions. Be sure you're getting the quick spins and not the twisters.. I didn't realize that I had picked up the twister model once and I couldn't get them to fly at all. If you really prefer the blazers, Extreme shrink-fletch makes their product with Blazer vanes. The only thing about the Extreme's are you have to apply them with 180 degree water and not boiling, this according to their sales rep. Good luck.
Blessings.....Pastorjim