I don't like the rope cinches, I've had them rub before and really I'm too lazy (and busy) to clean the cinch after every ride. That said, I don't like the grippy cinches either- they DO rub and I've had nothing but bad luck with them. I adore my hand-me-down smooth neoprene girth, I've never had it slip, I've never seen it rub my mare, and all I do is wipe it down when it gets dirty. That thing is durable too, I can't remember what brand it is, but it's lasted through two generations of use and only has some rust on the buckle, and a couple chips out of the material.
The felt ones are okay, I've never had them cause sores, but again- I hate cleaning them
I spend enough time cleaning saddles, kids, horses, and chore-work, I love cutting time when possible.