The most popular disc that Gateway produces, you all already know and love it: the Wizard!
The Wizard is a true, stable workhorse putter. It holds whatever line you throw it on with very little fade during its drop. It also works as a great putter in windy conditions and handles controlled power very well. This makes it an excellent choice off the tee for mid-range drives in addition to upshots.
 
A very consistent and accurate disc that should find its way into your bag.
Flight Ratings: Speed 2, Glide 3, Turn 0, Fade 2
 
About the plastic: SS (Stupid Soft) plastic is a the mid level of stiffness in the Gateway line-up, with some stiffness around the rim and more flex in the center. These discs flex in half at 14-18 lbs of pressure and cover a wide range of putting styles and are still firm enough to be used for driving and lay up shots.