I have the "ARCHERS FLAME " I had the luminocks but couldn't mount the magnet right. then I get the archers flame they don't use a magnet. I did get to use them last yr I could see the 3 misses I had and 1 hit, a pass though. misses are so easy to find. no more lost arrows. keep that in mind when figuring the cost. the $10 for the nock could save you a $20 arrow.
http://archersflame.com/