Any possible advantage I can get I'll take advantage of, they are a bit pricey and Seth mentioned. I use, and have usedboth the Tracer and Lumenok, I havent had too many issues with either, but I have had a few with both, nothing frequent enough to keep me from using them.The mainreason I like them is because I can see the impact location on animals better normally with a lighted nock even in daylight, which is a huge advantage for tracking/recovery reasons knowing whereI hit. Shots happen fast, and sometimes Im not 100% certain where a shot may have hit, with the lighted nocks it really helps me, but Im old and blind anyway lol. The other reasons are obvious like finding your arrows, etc.... so for me personally, yeah I use them and will continue to do so.