Yes some lighted knocks are brighter then others, but remember that the brighter they are, the more energy they will use which means that your battery life will be shorter. There are always trade offs for either longer battery life or brighter light.

I do not know very much about the Easton Tracer knocks. I have the Orginal tracers before Easton bought them out. They did have a replaceable battery, actually they were very easily replaceable in the field. The blinking light (after 15 seconds) was a great feature because the blinking light was easier to spot then a steady light.