the parelli ones are made of a different rope and if you are doing a lot of ground work finding something with the same rope would be recommended...by me (not saying spend that kind of money on one tho) if you look around you can find them. They are a heavier core inside the rope which gives it more wieght and more feel.
Yeah, used to be into Parelli quite a bit, but never bought into that difference, with the halters at least. I have held a genuine Parelli halter in one hand & one of my home made yacht braid halters in the other & felt no difference. Even at a clinic I took my horse to, when the instructor bagged me for not having the real gear, the only difference between halters he could pick was the leather Parelli tag! As for weight of lead ropes, yes, the Parelli ones are thicker & heavier than I use, and each to their own, but I like it that way. I think the lighter ones actually offer more 'feel' than a heavy, dragging one, especially when they also have bloomin heavy clips - that sort of negates the lightness & point of using a rope halter IMO. Part of the point of a rope halter IMO is it's soft & light enough that the horse hardly feels it when you're not asking for something. That's certainly not the case when you attach heavy ropes.
The width of the rope matters cause with wider or thiner rope you get stronger or weaker communication.
Oh, so they're calling it 'communication' these days are they??<TIC> I call it harshness - the thinner ones are bitier. However, as I don't believe in using pain to train, I don't find wider ones, or even flat halters any 'weaker' at *helping* me communicate. ....I know, being a bit pedantic there!