What's the best disc Discraft makes?
I started out throwing more Innova, so I am a bit biased. When I started trying out Discraft I really loved Rocs, Firebirds, and Teebirds. Immediately I liked the Buzz better than the Roc. It was straighter, less flippy, better plastic, and went further on a line drive golf shot than the Roc. I've thrown other people's Rocs for fun since and have played many rounds with some of the best Roc throwers on Earth and I've got to tell you, the Buzz is more versatile and holds a better line.
The Predator is to the Firebird what the Buzz is to the Roc; A bit faster with more glide. It took me a little longer to let go of my beloved Firechicken (the one I retired had 2 aces), but playing on a course with a lot of 340-360' hyzer shots over water and road taught me that the Predator was a little more effortless while still having impeccable stability.
The Teebird is still the best disc for straight shots with a hyzer finish I've found, so its still in the bag.
So there's my opinion. The Buzz and the Predator are Discraft's two best discs.