Love this thread! It's like a tug-of-war between the Hieldites and the Cousinites. Buddy fans believe his work ethic and the skill set he put on display last season, make him the logical choice to improve the most. Isaiah fans feel that his upside and the fact that he has been playing out of position, gives him the advantage. I think all of you may be right.
It's hard not to pick Buddy because I know how hard he'll work to get better and to improve his shooting from the perimeter. He was easily one of our best players last year, and with Roe and Amath no longer around, the expectations will be even higher when the season starts this fall.
I'm tempted to go with Cousins, because I agree with those who say that we haven't seen the best of him yet. People tend to forget that he was a combo guard in high school with limited experience in playing the point. Even experienced point guards have trouble in adjusting to the college game sometimes. I'm not too fond of his shooting stroke, but he has the tools to be a really good player in time.
Hornbeak is the whole card in that threesome. He may turn out to be the best all around player in time, due to his well-rounded skill set that really has no glaring weaknesses. He just needs more experience and more time to adjust to playing at this level.
In short, OU fans had three pretty darned good freshmen guards who will only get better with experience. That's a good problem to have!