I don't know any new bows with that name. I'm going to assume the bow is used, so I do know that XI Archery made a Legend XRG. In that case it has to be at least ten years old. For fletching I would use 4" for hunting situations and set them on a helical or straight offset to spin the arrow and add stability in flight. I've tried out different string silencers this year to see what the effects are. Cat whiskers, Simms string leeches, Alpine string things, and True Ball spiders. For the cost difference, longevity, and effectiveness the cheap old Cat whiskers are about as good as it gets. I try a lot of different things just so I know what's going on. Then I don't have to ask some of these questions, but can answer some.