You've already spent money on the Teebird, so just roll with that. Trying to chase down that "magic disc" that will add another 20' with your existing form will just cost you a ton of money and you'll lose time you could spend perfecting discs you already have. Take it from someone who has been there and wasted that money. I've gone through Sidewinders, Avenger SS's Eagles, Teebirds, Volts, Amps, etc looking for my fairway driver of choice. I'm right back where I started, which is between an Eagle and a Teebird, with a well beat in DX Teebird being the first disc I pull when I need to have faith in a shot. I also second the guys preaching Comet love. It's an easy disc to learn to hyzer flip, and will frustrate you to no end until you clean up your form, and then reward you with some of the sweetest flights you've ever seen.