This could go under testimonials, but I'm not a veteran Madden player, but I've been above average... I recently got the Balanced playbook, and since using that with the Chargers, I've won 11 ranked matches in a row (I was about 50-30 before then) and rarely score less than 35 points a game. And that's just using plays from two of the playbook's formations!
In short, I concur that the Balanced playbook here at MaddenBible will get you fast, quality results.