Blazers guide my arrows like silent lazer beams. I shoot a Drop Zone rest and the only time I've had contact problems was because the spring in the rest was gummed up and the finger wasn't dropping fast enough. Cleaned it up, no more problems.

I really, really like them. For practice, I shoot Stingers out to 70 yards and they fly great. I did have to retune my bow when I switched though...Not sure why..