A great utility disc that has been apart of of golf bag for years. I use it for long putts and short upshots, especially on very hilly terrain where it is very important to land flat. The Sonic is very easy to throw. It will fly straight for most of its flight, with very little fade.
The Shark is the most predictable stable mid-range disc I've ever thrown. I use this disc for turnover short shots. It's very similar to the Roc, but gets to the turnover point much faster.
This is my favorite driver! I have thrown this disc over 600ft. It is my favorite and most predictable rolling disc. My best disc for over-hand thumbers. The best disc for any headwind.