The disc has a soft outer edge and the little weight is concentrated in the center of the ring.
Getting used to the soft edge. Thus, the disc springs when hitting something and you can catch the disc a little worse. More specifically, when the wheel strikes the palm of the hand, then the disc springs back a little instead of ramming as full-surface discs into their own hands. I personally do not mind, because I know different techniques to catch a disc.
I have the disk until now thrown about at 8 days (each about two hours). So I can not yet to say how long the disc by holding before cracks occur. On the other hand I had already cheap discs that had been cracked on the first day. In so far even with the life all super.
I do not want to miss this disk because it is the only disc that you can play forever, even with considerable wind. For windless days you can even take a couple of extra slices cheaper to conserve this luxury disc.