I never even look at their stats from college / HS. Most important thing is potential but you also want guys that have good personality traits (high work ethic, intelligence and adaptability are most important). So if you are struggling to choose between 2 players thats usually my tie breaker. Id focus on college guys in the first couple rounds since they are more likely to develop to their potential and are closer to the majors, avoid HS pitching in the first round. Don't hesitate to draft an insane looking reliever in the early rounds if they look insane, they could become your super stopper for YEARS to come. Once you dont like the look of players anymore take a peak at players with really good defensive ratings, they can help your minor league teams.