LSU-OU who to watch for the upcoming draft

I love watching Ali Highsmith, but I wouldn't pick him unless I had either A) a very fast LB who covered sideline to sideline, or B) a 3-4 defense. He's too slow to be a top NFL MLB. He got ate up by that Arkansas FB Hillis in coverage. I would seriously look to Chevis Jackson in the later rounds. Zenon seemed to give up more big plays, but Chevis was usually on his man. He's 6', not huge but big. He's not a big turnover machine, but he plays the ball well (just doesn't always catch it). The main positive is he doesn't get pushed around the by the WR.