phirstaide,
the ones that come on by a magnet are Easton Tracers. They bought out Tracer last year. I have some and like them, they are much more reliable than the Lumenock. I have never seen the ones that have a "glow stick". However, they sound like junk.

They say the archers flames are the most reliable. the are activated by a push type mechanism. You have a glue a dowle in your arrow and it pushes against that.

Like I said, I have a pack of 3 archers flames for sale for $20. never shot em. let me know if interested.