The leeches maybreakoff after a hundred shots or so. That was my experience at least.

I went to an STS (would have got a MeanV if I would have known about them earlier) as well as cat whiskers. Both made a big difference on my bow and people comment on how quiet it is. I shoot 426 grain 340 Axis arrows and they are quieter than my lighter 350 Maximas. The beefy 2219 XX75s are quieter yet but I like the Axis.