The Discraft Stratus is a long range, understable driver at (-1) on Discraft's stability chart.  It is an excellent choice for beginners looking to add distance to their drives and for help keeping their disc in the fairway.  More advanced players will be able to utilize this disc for anhyzer shots.  Pro-D plastic is very affordable and also super grippy, even when wet. 

For more stability, grab an Eclipse.

For something a little more overstable than an Eclipse, give the Cyclone a try.