I don't like those sticky reins for dressage. First of all, if your horse is pulling so hard that the rein is sliding out of your hand, then you guys need work. Dressage reins need to be really pliablle so they can mold around your hand well and be thin enough to be easy to close your hands around them. The stops , well I like them because the help me to see if my rein lengths are way too uneven. I am NOT a big show rider, so it's just personal preference, not based on a lot of show experience. But since it's a forum, i guess that counts well enough.