The XS is one of Discrafts most popular models, and was the 2001 world distance record holder at 712 feet. Easy to throw, especially for beginner to mid-level players. Its an exra long range driver that is best for huge distance.
I love the XS. It is the disc I throw when I am uncomfortable to throw anything else. If you have a lot of snap you will turn it over (anhyzer). I try to use it for long range tunnel shots. The disc glides very well with a minimal snap and is super straight. I think you can compare the disc almost to a Sidewinder.