Tracers and lumenok (they are the only type I've used) are highly visable and if you do miss a deer the red blinking light does not even get a deer's atention. I like the tracers better but I will never hunt without one or the other again. No more searching for your arrow which is most important to find after a shot. I hit a twig last year and my arrow went about 20yds off at a 90 degree angle into the thickets and I saw it emmediatly from my treestand. Thier not cheap but are worth the money.Besure to get the right one's that fit into your arrow diameter thier are different sizes.