Left Dash feels hard, runs out a little more on the greens than I want it to, but is long and durable. A couple you should try for straighter tee shots are the OnCore Vero X1 and the Titleist Tour Speed. The X1 is supposed to be less sensitive to sidespin errors due to perimeter weighting. The Tour Speed is the current version of the prototype that was out a couple of seasons ago and that ball was designed to reduce curvature on tee shots while still providing a urethane cover.