I shoot the Easton Tracer Nocks model with the magnet and couldn't be happier. No more having to worry about the nock accidentally getting pushed in and lighting up and running down your battery. No difference in the flight of my arrow lights up very bright every time, and in about ten seconds you can put them to sleep and not worry about accidental exposure to a magnet turning them on. They run about 19 dollars for a twin pack, and as said earlier well worth the money to retrieve an arrow that already has about 15 to 20 dollars in it.