I talked to Muzzy and they said that there is really little difference between the two cable slides. The new Teflon slide was cheaper for them to produce than the roller slide. They also said that the new slide was quieter on some Hoyt bows. However, on other manufacturers they had heard mixed results about reducing the noise. As far as speed goes they really didn' t know if the new slide resulted in an increase in arrow speed.

It would seem to me that the teflon slide would have to be quieter since there are less moving parts. I think it' s only a few bucks so I might just give it a try.