I am a junior player, and without knowing a whole lot about discs I bought a couple so my friends and I could get into it. I got a used 160 range champion teebird, a new heavier teebird, a new 172 star wraith, a new 170 range champion leopard, and a new aviar putt and approach. I like the used teebird alot because I can keep it straight. I can drive forehand about 300-320 ft. With the wraith and the leopard i have little control. I want to improve my distance. Are these all good discs for me? What should I be using? How do I improve my distance?