One of the most popular drivers in the world, the Valkyrie held the world distance record for a decade. This is a stable flying distance driver with a good degree of high speed turn and fade. The Valkyrie can be used by players of all skill levels. It is a good distance driver for newer players developing form, and can be used for turnover shots and rollers for more advanced players. Because of the popularity of the Valkyrie it is available in just about every plastic Innova has to offer; DX, Pro, Champion, Star, and even Glow Champion. 9/4/-2/2. Innova Pro Line uses a special blend of plastics that provide unique qualities for each disc model. The different blends of Pro Line plastic produce discss with a wide range of rigidity from extremely soft to firm and stiff. Pro plastic is more durable than DX, and provides a better grip than Champion Plastic. Discs in pro plastic tend to be slightly more understable than counterparts of the same mold in other premium plastic blends.