This disc works wonders for approach shots. I used to make fun of my friend for having one until I gave it a whirl. It has a nice rubber rim so its perfect for those short approaches and also great for those 50-50 puts since if you miss it will stick right when it hits.
When thrown it doesn't bounce / skip too far from where it lands due to the rubber rim. Perfect for those layup shots or when you have to worry about it skipping or rolling somewhere bad.