Like many said work with the Rocs until at least hitting 250 with consistency. Then try out a Gazelle, Stalker and Teebird (In that order too). The Gazelle is slower and easy to work, new it will fly like a Roc. The Stalker flies similar to a Roc, but is harder to work than a Gazelle and a touch faster. The TB is similar to a new KC Pro Roc in that it has a strong fade, but it's straight early in the flight. The TB takes the most power to properly utilize out of the 3 drivers I mentioned.