This is a very good bit if your horse has a good mouth. Low leverage shanks combined with a medium control mouthpiece is a great combination. The copper causes the horse’s mouth to salivate to help keep it soft and supple to the rider. The mullen relief mouth is for even pressure across the bars and tongue and this eliminates the nut cracker effect. Are you moving from direct reining to neck reining? The stage B bits are all about transition, with the introduction of leverage and curb pressure.