Here's what Innova has to say about the Valkyrie:    

In lighter weights gives new players extra distance. Lighter weights also give players extreme range when thrown downwind, while maximum weights can give excellent upwind distance. The Valkyrie’s high speed turn and flight characteristics make it great choice for long range turnover shots and rollers.

Speed: 9   Glide: 4   Turn: -2   Fade: 2